So our good friend Steve started a web-based service where he'll draw a cat for you (he wants to draw a cat for you), whatever kind of cat you want, doing whatever you want, for $9.95 a drawing. He's doing pretty OK -- he's just shipped his 105th cat drawing.
But what if you don't really like cats? What if, say, you like nocturnal avian predators?
Or what if you can't stand to be limited like that, and want whatever animal you can think of?