Usually scope out the table games. Other than poker, gravitate to blackjack, roulette, and baccarat; in roughly that order. Oh and I normally order a drink. A G&T or Tom Collins hits the spot.
Honestly, very little, as I rarely play the slots. I'm much more into table games. Basically, if I'm killing time waiting on someone else, etc. I might run a few bills through the one armed bandit.