Simple psi wheel

It is easy to make a psi wheel , using a toffee wrapper.
Fold the wrapper, in half in both ways, so that it can be suspended
on a tip.  I suggest to play with different types of psi wheel of different materials, size and shape.  Then we can find the difference in interaction

toffee wrapper psi wheel

See live recording : http://www.ustream.tv/recorded/35223375