Yes, you can roll up your own lighter app by videotaping a lighter. Yes, you can create a soundboard by recording noises and creating a playlist. And yes, coin-flipping apps are a dime a dozen since most of us have ready access to some form of coinage. Along these lines I'm going to show you how to create three "apps" using nothing but a Mac (or PC) and your iPhone, iPod (must be able to display photos) or iPod touch. The apps? A "mood lamp" (or color-changing night light), a futuristic medical scanner (aka Tricorder) and a simulated energy blaster (aka Phaser).

The gallery will walk you through the process step-by-step and on the next page I'll show you a video of these in action. Essentially I'm making playlists: one each for the futuristic devices (with only one "song" in a playlist, set to loop) and a looping slideshow for the mood lamp. Much easier than Xcode, I'm sure. Got a similar DIY trick for you machine? Let us know in the comments. No doubt there are much better ideas than mine!

Note: you'll need speakers attached to your iPods, or you'll look like a fool pointing the thing at people and pretending you shot or scanned them. You might look like a fool anyway, but at least with some external speakers they'll be in on the joke.