The maniacs at Tom's Hardware behind the solar Wii have done it again, this time making a solar Nintendo device that's a bit more portable. Yes, they've brought their sun-loving ways to the DS Lite, making a version that lets you have marathon Mario Kart DS sessions without needing to plug in and get rejoiced.
Personally, I'm not exactly a whiz with the soldering iron, so I'd be afraid of accidentally fusing two of my fingers together, but this looks like a pretty sweet project for the more handy of you out there, so be sure to check out their step-by-step guide showing how they created this monster.