When I play a tourney in a new venue I always find out where the tip box for the dealers is. I'll put a $10 bill in either before it starts or when I get knocked out. If I win I make my total contribution at least 10% of the prize. I played a month or so ago and after being eliminated I gave the room manager a $10 for the dealers. He thanked me and said that was more that what most of the winners give. I think that is pretty sad.

(Most tourneys I play have a sub-$200 entry fee, and the majority are around $160 or less.)
"When you go into a bar you should always have enough money to: buy yourself a drink, buy a drink for someone who buys one for you, tip the bartender." - Pete Johnson