I said previously, "to oppose absurdity, one must use moderation", but it's so frustrating to see intelligent design gain any kind of hold or traction. Truly, intelligent design is a banner for the willfully ignorant. So how do you fight it? I don't know if stickers and stencils are the best way, but it certainly is fun.
The real answer is, you fight ignorance with education. Unfortunately, that's precisely the ground that intelligent design proponents are trying to take, further crippling children, the next generation of innovators, with this blithering stupidity. But kids grow up fast these days. Maybe poor public schooling is a mixed blessing.