Imagination's Toolbox, a gaming system designed around rules-light play, is back in development over at UncleBear.com. This has been an on-again, off-again project of Berin's for a while, and I'm happy to see it on again. He's got a bare-bones version of the rules up on the site (by bare-bones I mean it's a simple text file, not that it's only a skeleton outline of the system). Check out the development document here, keep up with the project's weekly updates here.