Last Spring, we had a visitor on the creek, and before he/she was gone, I managed to catch him in a great closeup photo. The crows and jays were dive-bombing him (a crow kicked him repeatedly - which was before I grabbed the camera). I made a couple of craft-y buttons, and have received enough requests for other stuff, that I went to CafePress and uploaded the photo.
www.cafepress.com/LookAlive" has T-shirts, bumper stickers, and any other thing you can think of with this subtle warning to keep moving above all else!