One of the newer projects by French artist Aissa Logerot (who made the ironing board that flips into a mirror) is called Halo, and it's a graffiti can that sprays LED lights instead of spray paint. When the battery runs out, you have to shake the can to recharge it. A cool tool for light-writers.
[Artist's page via NotCot]
About Lisa Katayama
I'm a contributing editor here at Boing Boing. I also have a blog (TokyoMango), a book (Urawaza), and I freelance for Wired, Make, the NY Times Magazine, PRI's Studio360, etc. I'm @tokyomango on Twitter.