Top Functional 3D Prints You’ll Actually Use Every Day

Not all 3D prints are just for show! Discover the most useful and practical 3D models — from desk organizers and cable clips to workshop tools and household gadgets.
Whether you're a beginner looking for easy prints or an experienced maker seeking challenging projects, this collection offers something for everyone. All STL files are ready to download and print, with detailed information about each model to help you achieve the best results.
Featured 3D Models in This Collection
Here are the 21 carefully curated STL files in this collection, each tested and verified for quality:
1. 3D Printed Herringbone Gear Phone Stand
The Herringbone Gear Phone Stand is a 3D-printable, support-free design that combines functionality with creativity. Featuring a herringbone gear system and a turn-slide lock mechanism, this stand allows for precise angle adjustments while securely holding your smartphone. Perfect for hands-free use, it’s an innovative addition to any workspace or home.
Key Features:
Support-Free Design: Easy to 3D print without requiring support structures.
Herringbone Gears: Provides smooth, reliable, and precise angle adjustments.
Turn-Slide Lock Mechanism: Ensures a secure hold and effortless customisation of viewing angles.
Universal Compatibility: Fits most smartphones, making it versatile and practical.
Printing
No supports needed
2. 3D Printed SpongeBob Fridge Magnet
Did you know that SpongeBob has been hitting the gym lately? He's really good at squats, so now he can hold your things with his cheeks!
You can use this funny magnet to hold your pen or your business cards, or you can simply let it hang on your fridge with his swinging legs.
I'm sorry that I wasn't able to print that in yellow, I'm gonna update the project with some photos as soon as I get the filament.
This model requires two 6x3mm magnets , you can easily find them on Amazon or in the Maker's Supply shop.
I uploaded the print profile and now it supports 8x3mm magnets, tell me if you need any other magnet size.
You don't need to use supports for this print, I printed that on an X1C, tell me if you have some issues with other printers and I will be happy to help you!
3. 3D Printed Iphone 15 Pro Max Case - Sliding Middle Finger
iPhone 15 Pro Max phone case, I'm creating a line of Sliding Cases and I started with this fabulous and funny case. It's truly functional and I recommend printing it in TPU, the finger in standard PLA.
4. 3D Printed Checklist Board
This is the second version of my 3D-printed checklist board, improved based on feedback and lessons from Version 1.
Here’s what’s new:
Improved Switches: In Version 1, the slide switches often got stuck. I made some adjustments to improve their operation and added a small bump to help keep them in place after being moved. This makes it clear what state the switch is in.
Simplified Task Setup: In Version 1, cutting and threading individual tasks into slots was tedious. Now, all tasks are on a single sheet. You just cut one square from the sheet, place it on the board, and secure it with a frame that holds everything in place.
Added Hanging Ring: I added a ring to the top-right corner for hanging or gripping with your thumb while using it. I’m not entirely sure how useful this feature is, so let me know what you think.
5. 3D Printed Color-Changing Crocs!
Have fun with it and leave a like or subscribe if you like it!
If there are any suggestions for improvement, feel free to write a comment.
6. 3D Printed Tilt Phone Stand
The stand allowing you to comfortably and securely hold your mobile phone at the optimal viewing angle.
Designed for printing completely without supported!
You will need glue (Superglue for plastics). It is necessary to connect the parts (02_Gear_Stand_Left + 03_Gear_Stand_Right) together.
Its possible that the gap between the base and the tilt gear will be too large. This will cause a slip. To prevent slipping, I recommend sticking the electrical tape on the guide (Base). Or you can also add a layer of glue on the contact surface and let glue dry.
Otherwise, if the connection is too rigid, it is necessary to grind the contact surface.
7. 3D Printed Pokemon Psyduck Coaster
Following the Squirtle coaster, the Psyduck coaster has arrived
8. 3D Printed Funny Squirtle Coaster
Printing Suggestions:
It is strongly recommended to print the “Head Optimized Version”, as the previous version may experience adhesion issues
9. 3D Printed Flexible Gripper
The gripper beaks can take the shape of the object they hold, like in this case an orange!
10. 3D Printed Crazy Nose Organizer
Need a solution to organize your paper pins? Check out this crazy nose organizer!
11. 3D Printed SMASH'N'DICES
I present to you my latest invention: a game of two dice with mechanical launch. You will say to me: "what is different from two traditional dice?", well I will answer that this model is more fun and especially much less noisy.
Great for RPGs.
Printing profiles will allow you to choose which dice you will need, D4, ,D6, D8, D10, D10 (tens), D12 and D20.
For example, you can place one wheel on the left D8 and the other wheel D20.
Its exclusive mechanism allows the launch of the two wheels at high speed. The gears on the wheels are of different diameters, which allows them to turn at a different speed, and make the results random. The rotation time is around 30 seconds, if you hit the button violently (not too much though!!!).
The wheels will stop when you release the button, and will necessarily stop on a face of the die.
The viewing windows are large and oblique so that each participant around a table can see the result.
You will need a few hardware to assemble this model (every maker have these hardware):
-Two 625ZZ ball bearings (degreased and lubricated beforehand)
-A ballpoint pen spring
-Four M4X20mm screws
-Four M3X12 screws (up to M3X20mm).
-Optional: 12 X10mm nuts for more velocity
important points:
-the pinion shaft is nothing more than a piece of filament (don't forget to shave it off with cutting pliers. See the assembly video)
-add a drop of glue between the button and the push finger
-Be careful about the direction of assembly of the pinion and to close the cover properly with the mechanism armed: push button upwards and the pinion at the stop with the push finger:
12. 3D Printed Mechanical Double Dice
Inspired by a 1920s design, I have crafted this gadget in credit card format. For optimal functionality, you will require two 625ZZ ball bearings (EA016 Maker's Supply) – many makers already possess these! – and a ballpoint pen spring.
The bearings must rotate flawlessly; therefore, they should be immersed in a degreasing solution and subsequently lubricated with WD-40.
For the carbon fiber effect, the Fiber Carbon plate (as depicted in the photographs) is necessary.
Should you desire wheels indicating more than six options, please inform me, and I will create a bespoke design. For instance: one wheel with eight numerals and the other with twenty.
13. 3D Printed Banana Fridge Magnets
Stackable Banana fridge magnets. Put a bunch aside when you don’t need them.
Single and multi-color printing models are included as STL and 3MF! They work with all current and usual multi color setups.
Instructions
Get 10 x 2 mm neodymium magnets, preferably in N45 or N52 strength. You will need two per banana. It might work with 10 x 1 or 10 x 3 mm magnets, too - but that is not tested.
Print as many bananas as you want. 18 of them form a full circle.
The little magnet cap is optional - It is 0.4 mm thick and will add to optics but reduce strength slightly. Decide if you want to print it or not and proceed accordingly.
Print the inserts. They have a small cut that serves as rotation help when aligned with the small cut inside of the bananas hollow part. There are two sizes provided. Depending on your magnet tolerance and cap choice, one of both will work fine. If you are not satisfied with the alignment, you can scale the insert slightly.
Glue the parts into the banana in this order: Magnet, Insert, Magnet, Cap (optional).
For each consecutive banana you need to make sure that the magnet alignment is correct. You can easily do this by assembling one top of your original banana. When inserting the bottom magnet, you can already feel if it is rotated correctly.
Enjoy!
Size of one banana: 73 x 45 x 18 mm
14. 3D Printed Squiddy Fridge Magnet
The Bikini Bottom' s Gym is counting a lot of new members, including Squiddy, and his strong point is… arms and legs! As an octopus he decided to employee his tentalces to hold your post-it, sheets and business cards. Meanwhile, he will also hold your business cards with his cheeks. Let him join Spongebob and Patrick on your fridge to complete the series!
Again, I didn't have the right filament color for this print ( which I think could be some turquoise PLA ), as soon as I get it I will upload some new photos.
This model requires 6 (six) 6x3mm magnet, get them on the Maker's Supply shop or on Amazon.
I designed his articulated legs and arms to work when printed with the 0.16mm extrusion, if you print that with other settings tell me if it works.
You don't need supports for this print, and it's pretty easy to mount the legs. Feel free to use some glue for the magnets or the legs if you think it is necessary, I personally didn't use any glue and it works great.
You can find the Spongebob an Patrick version on my profile, let me know if you want this series to continue!
Don't forget to leave me a review,
15. 3D Printed Mr Krabs Fridge Magnet
Guess who was jealous of his friend with such a thick a** ? Yes, Patrick! So he has joined Spongebob at the gym, and he is pretty strong too! Now he can hold your things with his cheeks next to his best friend Spongebob, and your fridge will be Bikini Bottomed.
16. 3D Printed Magnetivy - English Ivy Fridge Magnet with Articulating Stems
The English Ivy Fridge Magnet Ivy is a climbing plant, and now it can climb up your fridge! My Fridge is always a mess with a bunch of different ugly magnets, I wanted something that looked great, but could also organize all the stuff on my fridge. This Ivy was a great solution.
You can take the leaves off the stem to use as a single magnet, or slide things underneath the stem to hold items as well!
Prints-in-Place The stems of the ivy print in place! Thanks to some specially designed hinges. Each stem section has multiple joints allowing you to wind it back and forth on your fridge. All you have to do is add magnets.
Customizability The stems all snap together, so you can easily make your Ivy as long as you want. There are also Y branches so you can branch off your vine in multiple directions, just like the real thing!
Components Needed You will need 18 magnets per stem section (6 on the stem, 6 on each leaf's stem, and 6 on each leaf)
17. 3D Printed Impossible Passthrough Key Hanger
Dotted Lines love the recent trend of ‘impossible passthrough’ objects, but they have been limited mostly to toys and sculptures. I set out to create something functional with this technique – and I settled on a key hanger and key chain. The ‘passthrough’ portion features extra struts which make it much easier to print, and they keep the rack strong with continued use. I hope you enjoy, please like & boost if you’d like to see more models!
Instructions
In the 3mf file there is a version of the rack with and without screw holes.
The screw hole version is designed to fit #2 wood screws (should fit most wall anchors as well), and the other version can use double-sided mounting tape.
Simply print one rack, and three keychains
There are two plates for keychains: single color, or print-by-object for easy multicolor
Tips
If you encounter stringing, you may want to use a blow torch or heat gun to quickly remove
Like most pasthrough objects, any friction will loosen over time
18. 3D Printed Chopstick fingers
No chopstick skills? This is your solution! Anatomically shaped so no one will notice you're cheating
19. 3D Printed Mechanical Dice
The Mechanical Dice is a mechanical device shaped like a pocket watch, fully 3D-printed. Its refined design evokes the classic style of a pocket watch, featuring a circular case with elegant details. At the center of the top, there is a button: when pressed, it activates an internal wheel with the faces of a standard die (numbers 1 to 6). The wheel spins as long as the button is held down and stops instantly upon release, revealing a random die face.
20. 3D Printed Breakdancer Phone Stand
This Breakdancing Phone Stand is built to WOW! Do a spin, Fold up, and even throw in a Flair on top of being a functional phone stand!
Files Included for multicolor printing, or print each part separate and assemble with super glue and pieces of filament for the holes.
Instruction manual included for easy printing and assembly.
21. Fuel Gauge Wall Key Holder Hanger
Have a special place for your car, truck, or motorcycle keys.
When placing a key, the gauge shows a full tank. The design keeps keys away from the wall to protect the wall and the keys.
The model can be fixed to the wall with double-sided adhesive tape, or with a small screw.
With the exception of the "glass" (optional), this model does not need any additional non-3dprinted parts, no gluing required either.
Print it with any color combination you prefer, use your car color, the possibilities are endless.
If you prefer, you can print the background on a regular 2D printer, or even create your own.
Ready to Start 3D Printing?
These 21 STL files represent some of the best 3D printable models available today. Each file has been selected for its quality, uniqueness, and printability. Remember to check your printer settings and use the appropriate materials for the best results.
Pro tip: Always preview your STL files in your slicer software before printing to ensure optimal orientation and support placement for the best quality prints.