What about takeout from a restaurant? I've been asking around about this lately to get some feedback. I have to go pick it up, bring it to my house, unpack it, clean up my mess, refill my drinks, lay out my silverware, etc.. What did they do? Put it in a bag and take my money? Perhaps if you could take the server home with you to perform the services you get at a restaurant and then they could find their way back by themselves, I would consider it.

It's almost as ridiculous as tipping a barista.