I usually turn down the tips. It's rare, only a couple times/year. I get fat on snacks during christmas time, though. Spiral hams/gift certificates/gift baskets are not too uncommon then either.
Dont turn down tips. Its rude.
Had a banker guy that would give me 20 bucks EVERY time he saw me. 5 days a week sometimes. After a few months of this, I kinda made a scene and denied the tip, doing like a juke move, and saying "I make enough money, yada yada". He used to be real nice to me, money aside. From then on never says anything, just a head nod. I thought about it some, and he musta been doing that to show off for the teller girls.
Anyways, moral of the story, don't deny the tip.