$1 to $2 for the casino machine attendant??? That list is CRAZY. The only people that get a tip from me are:
1) barber, because she's always very nice and pleasant
2) waitress
3) UPS/USPS delivery guy, because they often go out of their way for me
That's it. The US is tip crazy. I see tip jars out at the gas station counters now. For what? How about you give ME a tip for coming into your crummy gas station and overpaying for everything?