Glow Graffiti lets you paint with light

Interested in the artistic aspects of graffiti, but not so much the vandalism, lawbreaking, and messy paint? Well, Glow Graffiti is a much safer, more gimmicky alternative to graffiti. Rather than spray paint, this can sprays light, kind of.

You see, it uses a special sheet that will light up when you spray it with the can. Turn the lights off, hang the sheet up, and you'll be able to tag it with light to your heart's content. The graffiti will fade away in less than an hour, leaving no mark of your prior masterwork. Fun? Maybe. Legal? Definitely. Cool? Probably not.

Via ThinkGeek