Father keychain
thingiverse
This is a remix that adds a ring so you can make it a keychain. I scaled it down to 25% and it seems just small enough, will add pictures of the make.
Download Model from thingiverse
With this file you will be able to print Father 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 Father keychain.