Irritating tipping question (chip denominations...?)

[Guy McSucker]

Thirty minutes of search revealed no answers, so here goes...

I've never played above $4/8 live in the US before. I'm off to Vegas next week and plan to play $10/20 - $30/60. In the little games you have piles of one dollar chips in front of you so finding a dollar to tip a dealer/waitress/other is easy.

What chip denominations are used in mid-limit games? If it's all 5s and up, what's done for tips? You crazy Americans don't have an equivalent of our convenient one-pound coins and I don't think fumbling with paper money would be a good plan.

Ta,

Guy.