Gaming computers are known to be expensive energy hogs. But what about returning to geeky roots and making a really cool, really tiny gaming computer, where much of the fun is in creating both the device and the games yourself?

Thanks to a handy kit - the YBox2 DIY Mini Network PC offered by Think Geek - you could have a crafty afternoon putting together an eeeeetty bitty computer, and countless hours programing cool games to play on it.

If you're really feeling geeky, you can green it up even more by skipping the kit and finding the necessary parts second-hand through resources like craigslist, thrift stores, or perhaps your own closet.

Don't let the minty fun stop there. There are lots of great geeky projects that involve reusing mint tins. Maybe you need speakers, or a solar charger for your computer? Yep, you can make those from found items and mint tins too.