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by cozzyd 55 days ago
my 4-year old daughter likes them and is sad whenever they seem to get stuck in random places for no reason.
1 comments
Joel_Mckay 55 days ago
Even a bit of cardboard can do surprising tasks with a bit of help. Maybe a fun project. =3

https://www.youtube.com/watch?v=kn1tSPP0VF8

http://www.tweenbots.com/

link