Following on Carlos "Making new nature" post, more things that dance and kick, yet differently *:
Robotecture , Soft Robot, Ferrofluid Sculptures, the good old Hoberman, and, of course, the Aegis Hyposurface.
(*most of these do depend on electronics or electricity, for sensing and/or moving, or simply existing. But that's part of the fun, I would say.)
(Carlos, I haven't forgot the .py thing, i just need a little time...)