I would suggest that they install small lockers with combination locks. When I worked at Bed, Bath & Beyond, I never had to worry about my personal belongings because I had a locker that was LOCKED.

I know this isn't much consolation, and I'm really sorry some dirtbag stole your money. But it's an $80 learning experience. If they refuse to install lockers, I'd only take enough money (keep it on you at all times) for lunch, snacks, etc.

That really sucks!