64 +1 or -1 counters
thingiverse
I decided to create counters with my girlfriend, which we always need. I designed them to be 3D printable and functional on both sides - one side adds +1 and the other subtracts -1. Let's hear your thoughts in a comment or by pressing "Made" if you like this idea!
Download Model from thingiverse
With this file you will be able to print 64 +1 or -1 counters 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 64 +1 or -1 counters.