A simple belt drive can be made from spools, dowels, a base (wood) and a
ribbon or large rubber band and figures for twirling. By turning a knob
on one of the spools, the band moves the others. We have made a group
sculpture with each child making a figure/form to add to the final
piece. The figures can be moved around spool to spool, and when they
are finished - each child can take their own piece home.
They are really fun to make - all grades. (We've made dancers around a
central figure, wire sculptures...)
You can also make a gear system using corrugated cardboard.
Just a different king of spinning.
There are lots of books on the how to for each, but if you want more
information - let me know.