Step 8: Oh, no!
Unfortunately, accidents during prototyping reduced me to just one last band. After test flying the final model, I decided to wind it just a little tighter to make it fly really well in the video.
I snapped the band.
Still, here it is, ladies and gentlemen, for your consideration - the rubber band powered butterfly.
Double oh no! - this isn't as original as I thought. I was just googling for some images of butterflies, intending to draw on my finished wings, when I came across an existing rubber-band powered butterfly make. It's not exactly the same as mine, but identical in the flight mechanics. I hope this doesn't preclude me winning, but if it does, it was a fun make anyway.