While riding a local bus in a village near Shanghai China I noticed a rather elegant device for ticketing. It's a wooden box that holds stacks of tickets under a rubber band on one lid. The other lid holds the coins for change. The ticket girl rips off the proper ticket/receit for a rider and then digs for the change visible on the other tray. She can close it up when she needs to hop off at a stop, and then opens it quickly again. Elegant solution.