When I end up washing what's in the pockets, I most regret tissues. I end up washing the whole load over again. Nothing too terribly bad. Yes, it's good that our paper money is so wonderfully durable!

We just have a gas heater on the wall above our toilet--nothing could drop from there! The drain screen I have the sink to keep hair out (preventing plumber calls) has the added benefit of protecting against things from the medicine cabinet falling down the sink drain.

Glad you have good systems!