What kind of projects? you may be asking. It's simple. If you're like us, you're probably surrounded by all kinds of sci-tech detritus. Stuff that may be broken, outdated, random, whatever—it's all too cool to throw out but too weird to have any particular use on its own. Now the time has come to breathe new life into your old tech toys. Take any tech junk you've got around the house, bolt it together, and come up with something new and useful again (preferably while bellowing "It's alive! It's alive!" at your hunchbacked assistant).
If you've seen the "Repurposed Tech" feature in the pages of How 2.0, you know what we're talking about. More info is available over at Instructables, including the official rules and regulations for entering and examples of projects that would work. You've got until April 1, so get hacking! —John Mahoney
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.