How about this idea?...
They pay $10, then they watch live webcam of large turtle being put into center of a circle which is surrounded by 10-12 different paper bags (evenly spaced around the circle).
The turtle "chooses" one bag (by crawling closest to it).
All the other bags are tipped out, one by one, to show what prizes were in them.
Then the "chosen" bag's contents are revealed -- and that item is sent to the purchaser.
I don't believe that's a lottery cuz the purchaser will DEFINITELY get something of some worth.
Anyhow, just an idea.