Modification for Solar Kit

It might be simple for everyone else in this class about this assignment... But after I've tried several attempts, I realize that I've became a total digital/software girl...who is really bad at handcrafting or idea realization in hardware.... but here's what I have so far...



First I've thought of converting it to sound-- Music box might be a good model. But in reality, th small music box seems very tiny, it needs more than 6V power supply to start the engine.

Then I've been thinking of a mini Fan that we use during the summer, but it act like it still need more than 0.8 V for the power supply..

Eventually, I have to use the "box" from the music box and the fan from the mini fan, to create my own “竹蜻蜓”.