Yeah, we did our first show in October, and the first day we were mobbed by kids wanting to handle snakes. At one point I realized we had my lavender albino, two pieds, and a genetic stripe out. It was a mad theft risk. (And I think it was driving away customers, because they had to wade through throngs of kids just get to the table. I like mobs of kids, especially enthusiastic ones, but plenty of adults just can't deal with ten or fifteen of them at once.)
So we instituted a one snake out at a time rule.
We also had locking acrylic cases. And there were two of us, so the table was always manned.