Don’t put any coins in this cardboard coin box. How to make a coin sorting machine with cardboard With some thick cardboard, a cutting knife, some hot glue, a ruler, and probably a bit of trial and error, you can create your own DIY coin sorting machine.
The key to the sorting "mechanism" is to cut the right size ... Reinventing the Wheel (for Mars) Google : Online checkout in real life. Noël scientifique pour les jeunes filles by L’Oréal – Women Side.