Here is a cool little toy, an LED matchstick. We don’t really know what purpose it serves, but [dhananjaygadre] did a pretty good job of reproducing the effect. The light is controlled by a microprocessor to emulate the flickering of a flame. It holds a charge for a short while, staying lit for an amount of time comparable to a match. To turn it on, you even “strike” it on a match box filled with magnets.
Sometimes you absolutely need to keep your phone a secret. You know, like when you’re on spy missions. The goons at the door will always frisk you, but they never check under your shoe, right? [mikeyberman] shows us how to make our own Maxwell Smart style shoe phone. All you need is to dig a giant hole in your shoe sole and cram a cell phone in there. Will it get ruined by water? Probably. Will you look like a goon trying to talk on it? Definitely. Can you make it through airport security? Try it and let us know.