Well, pretty much anything is up for grabs - just not necessarily with the same girl.
What do you like??
Different positions?
BJ?
HJ?
DATY?
Massage (sensual or otherwise)?
LFK?
DFK?
GFE?
Anal?
Rimming (hers or yours)?
Or going further out on a limb ...
Fetish about (your favourite body-part)?
Dressing up?
Cross-dressing?
Domination (hers or yours)?
Bondage?
Toys?
Dildos?
etc etc etc ....
Everything's up for grabs. The more unusual kinks definitely do require advance negotiation or research.
Or you can just go with the flow, and see how much you can get away with ... if you get a refusal, try your charm or seductive ability ... or try offering more cash ... above all, make it light-hearted