Don't really have anyone buying me mixed gender gifts, but if so, I would probably want clothing (male and female), jewelry (what even part-girl doesn't?), and perfume/cologne (again, both male and female). Scented candles are always nice too.
The big surprise this year is what I find myself buying for others. Since I quit fighting and accepted my femininity, the gifts I have bought so far are much more personal (and thoughtful) than I have purchased in the years before. Texas Hot Sauce for my brother-in-law who loves the spice, but is an Okie through and through. Santa's "autobiography" for my best friend who would marry Santa in a heartbeat if he would only ask her. That's just a sample, but things that would never have crossed my mind a few years back.
.....Laurie