I would take a look at what other people charge for things and go from there, taking into account with what you are comfortable with and how much work you want to put in to a certain action. I would make a whole range of things from 10 up to 10,000. If you are non-nude I would focus on doing more silly things, or tease-y sort of things. You will have to find your own style over time.
I personally like making inside joke items with my regulars into tip menu items, then other people might get curious about them too. Maybe try dancing or singing, or making things for people to send out or holding contests.