This reminds me somewhat of Gravitrax which is a marble run system. One youtuber implemented a 19-bit adder with it: https://www.youtube.com/watch?v=TTK-vcwSm7s

This reminds me somewhat of Gravitrax which is a marble run system. One youtuber implemented a 19-bit adder with it: https://www.youtube.com/watch?v=TTK-vcwSm7s https://www.youtube.com/watch?v=TTK-vcwSm7s, a clock: https://www.youtube.com/watch?v=AOu0r1iUevk https://www.youtube.com/watch?v=AOu0r1iUevk and other crazy creations. All just with gravity. (there are powered extensions too) Gravitrax supports a similar kind of creative spirit as lego. For me, it's actually more fun since it's dynamic by default.