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A lego sorting machine by shape and color would be so great



This one is pretty impressive. :-) https://www.youtube.com/watch?v=m7Gs6-6p7qw


Impressive indeed ! I meant something that can be used at home. Like this M&M one



Coin sorting via weight or size would also be cool.


Technically something with just different sized slots for the coins will work, and let gravity take care of the rest...


Indeed, I had these as a kid in the 80s. Coins are simply inserted in the top right and roll down before falling into a stack. Hours of fascination! https://uk.pinterest.com/pin/303781937345711623/




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