Guitar Hero fans usually hate the Rock Band guitar controller and vice versa. Instructables has a pretty good how-to that can solve the problem for Guitar Hero fans at the cost of a Rock Band controller. It's a way to mash up an old PS2 Guitar Hero controller with the Rock Band Fender guitar and make a perfect hybrid with raised keys a clicky strum. You could just use an Xbox 360 Guitar Hero controller for Rock Band if you're on an, but where's the fun in that? [Instructables]

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Got an unused airsoft gun from your, guns are cool, teenage years? Why not transform it into bluetooth handset, that you'll probably still never use. A user at Instructables did just that by rewiring an older Jabber handset inside an airsoft gun. Even though it's probably the biggest and most absurd bluetooth handset, the workings of it are pretty cool. The trigger has been wired as the call button, the barrel as the speaker and the grip as the mic, making it perfect for taking calls with the wife when she finds out you stole her bluetooth handset and put it into a gun. Hit the jump to see iPhone lover's reactions to such a bluetooth device called iGiveUp.

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There's a Lucid Dream Machine sleeping mask on Instructables that pulses LEDs in your eyelids four hours after you fall asleep, waking you up just enough to notice your dreams and control their outcomes. The mask requires a fair bit of soldering and programming experience, so it isn't for DIY luddites like me. Which is good, because my sleep is too precious and my dreams are too weird to want one of these anyway. [Instructables via Make]

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Let us salute creative types who are super-brazilliant at hacking MP3 players and have a bit of time on their hands, because this is what they can come up with — a super iPod that is 50 times bigger than the real thing, and that probably won't break when you drop it. There's a gallery below, but you can catch all the pics and instructions at Instructables. [Instructables]

Instructables has a neat if dangerous tutorial on how to quickly make a key copy by tracing the metal from a Coke can. It's pretty obvious, and with that seed planted in your mind, there's probably no need to read the instructions.

Let me go one step further and remind you that you can copy a key for like two bucks at the hardware store, and that combining scissors, a key, and the edge of a shiv of aluminium can, this tutorial might as well be titled "How to lose a finger." Also, entering someone's home with a key copy is probably still considered unlawful entry, regardless of the lack of shattered door frame. Having said that, I will try this later and let you know how it goes. [Instructables]