Kinda lame for a PAD, but flowers always make a good stand-in. I found this in someones front yard on the way to a crafts fair. I have it labeled as a daisy, but I don't really know if that's what it is. At least it had nice, distinct colors, which I could play with. (Now, I just need to find time to play with it.)

PS - Crop, tweak levels, and sharpen (didn't require much). Extract flower from background. Insert black-filled layer between original and the extracted flower. Adjust opacity of black layer to allow some of backgroud greenery to show through, i.e., that's not some wierd bokeh you see.

A couple of shots of a rescue greyhound I met at the crafts fair: