You must not have ever worked retail.
People will try and steal anything.
We've caught people trying to steal fish, $0.99 incandescent light bulbs, $2 filter cartridges down the pants, parrots, I've even heard a story about some kids trying to steal a 15 foot Boa from a different pet store, that almost ended up killing them before they got it to the car. Instant Karma!
Working at resturants we had people try to steal big multi roll toilet paper dispensers, pizza pans, chairs, light fixtures. The list goes on and on.
If it's not bolted, welded, and cemented to the floor...