Two things that would be nice:
Wait-time signs near drive-thrus for banks, restaurants, coffee shops, etc. Sure, these people could end up losing business. But they might also anger customers less and, who knows, maybe the wait is actually shorter than it appears.
Pizza boxes have those nice backwards tripods in them to make sure the inside of the box top doesn’t smash into the pizza. Now that cupcakes are the craze, let’s bring something like that to cupcake boxes.