Mustang keychain
thingiverse
Here's a simple little keychain that a made in a school class. It is a little bigger than a normal key but fits very well in a key ring and a set of keys.
Download Model from thingiverse
With this file you will be able to print Mustang keychain with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Mustang keychain.