Free: Contests & Raffles.
I have a pre-printed note I stick in the window. It reads:"Dad, I'm just up the hill where I can see the truck. I will come down when I see you back at the truck"I have sat way up on a hill where I could see our truck and watched people stop next to it, read the note and haul butt.
For high buck I leave nothing in there of value. I've thought of laying out some condoms on the seats just to discourage browsing