Refrigerator Alphabet Magnets
thingiverse
I've got an idea about those old refrigerator alphabet magnets. They're roughly 2 inches tall and use 5mm x 2mm round magnets, which are pretty standard. Each letter has its own STL file, so you can batch print them in different colors if that's what you need. Here's a link to the magnets: https://www.amazon.com/Stainless-Refrigerator-Projects-Whiteboard-0-2x0-08/dp/B075LB2YB1/
Download Model from thingiverse
With this file you will be able to print Refrigerator Alphabet Magnets 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 Refrigerator Alphabet Magnets.