Here's another example of an easy way to add movement to a piece - a short piece of fine spring wire and two objects with small holes drilled into, but not through, them.
To Rastafarins, Ganja (aka Marijuana) is a sacrament - a holy thing. A little turning, a little texturing, a little coloring and a few thin turning "curlies" - a short piece of spring wire, two holes - and - you've got Holy Smoke. Exhale in its direction and - it MOVES - rotating on the end of the spring wire.
Simple. Easy.
Can YOU think of a way to use this simple and easy way to add movement to a future piece?