Was just cleaning up the basement, and came across my two old "wrist rockets" (one folding, other one not). It's been several years since I used either one, so the surgical tubing was shot. I remember (when I was young & foolish ;^) wrapping wire around bundles of stick matches, so they would land on the heads when launched & light up if they struck a hard object (like an asphalt parking lot)!
Need to find replacement tubing, because those things always struck me as a great 'emergency' tool to have around...