Mud graffiti is fun, eco-friendly

I’m not normally a huge fan of graffiti, but I like Jesse Grave’s this technique of using mud stencils to make temporary graffiti. It seems like a nice, low impact alternative to moss graffiti, plus you get to play with mud! He seems to be getting good results, however I wonder how well it holds up as it dries out. Anyone else try something like this? [via inhabitat]