Card Feet
thingiverse
To keep my desk postcards from toppling, I crafted a clay foot design, printed it out, and now my cards stand securely. The foot was made in ABS plastic with necessary supports for stability.
Download Model from thingiverse
With this file you will be able to print Card Feet 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 Card Feet.