Button Maker. "The Machine" 150. Makes 2.25" buttons, using a 2.625" paper blank (includes the part that will bleed over the edge and wrap around).

See wiki for the manual: https://wiki.allhandsactive.org/Button_maker

There is a translucent plastic box with the tool itself and then a wood box with extra materials. If those run out, there's a cardboard box in the classroom with a LOT of extras to refill the wood box.

Cost for supplies is $0.15 per button.