Just in time for the global 350 Protests, Inhabitat.com features Jesse Graves' mud stencils. Using mud is a great idea. Not illegal (can be washed off) and fun (who doesn't like playing in the mud?).
Inhabitat's post is mostly just rehashing what's on Jesse's site, but using better media is always something to think about. Especially when our spray cans aren't healthy at all!
