coin tube 50 eurocents
This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/0KwK8FhxVyV
It can hold 41 coins of 50 eurocents
print laying down for optimal strength when dropping coins in.
can hold 2 strong magnets in the back to hold onto a metal board. (like a tasks-board for the kids)
magnet size: 4x10x20mm or smaller