Just follow the weekly circulars for a month and figure out your own rewards system.
One guy out there used to target needy single mothers and he had all kinds rewards for moms to bring to her kids like coloring books, crayons, fake Barbi dolls, 99-cent Hot Wheels cars, etc. He would lay out these "reward items" in the hotel room like he we sales executive for The Sharper Image pitching a sales pitch for Macy's buyers. So like anal, blow jobs and all kinds of acts had different rewards. Like for this or that you could choose 1 item, for other 2 items, and other 3 items etc.