At my work place, we have a nice perk in that a woman comes to our complex, for about 20minutes, with foods from her restaurant -- muffins, breakfast sandwiches, bagels, soups, salads, wraps. She then moves on to another complex. Anyway, should she be tipped? Like, I buy a muffin, sometimes a muffin and a meal for lunch later, so $3-10. Tip or not? If yes, how much? I haven't been tipping - it cocurs to me afterwards, 'should I be tipping?' I asked a co-worker and she said she wasnt sure, she has not been doing it, but did see someone tell this 'traveling gourmet' to 'keep the change'. Hmmm, should we be tipping? What do you think?