I'm not aware of anything a foam strip or limiting strap, on the TCs a least. My doors don't generally hit the jam unless they are open quickly without restraining them. I agree that it isn't a comfortable thing to hear when a door does that. It might be nice to glue some foam to stop that but it would probably require you to take your doors off. If that's true, unless you have the brass hinges from Lotus Supplies, you'll have to reinstall your doors from scratch. You might want to weigh that against reminding people to control their door.