Core77

I hate the expression "hump day," but this certainly fits the bill. Coming dangerous close to a perpetual motion machine, all you need to do is watch the video to motivate your crafty side! We're going to save this for the weekend, but if Wednesday's truly get you down, then yes, make this a lunch-time project today. Our question: Will it work with Kool-Aid? (Probably, but as soon as you drink some, you'll bust the physics.)

Full plans here.