Toys, pets & children
What parent can resist the pleadings of their children? And what do children want the most - toys and pets. A combination toy store/pet store - now if that wouldn't bring in children (& their parents with the cash), I don't know what would. Of course, the pets could only be obtained from reliable, known breeders - no "puppy mills." Also offered could be obedience classes, bicycle safety, "me & my dolly" tea parties, etc.
If this is already being done somewhere, at least it proves I'm not nuts (well - not totally).
Reward: Acknowledgment from the outside world to prove to my family that just perhaps one of my "crackpot" ideas isn't so crackpot after all.