An equally impossible bucket list:
Asian 3 way (FMF), with a pair of old favorites
Blue Star Lesbian (a cute one, like Ellen Page, Portia de Rossi, Maria Bello, or Ruby Rose)
Adult little person (under 4')
Nuru (uncovered), in Japan
Sisters, Mother/Daughter, Aunt/Niece, etc. (any pair of female family)
Me +4 (essentially a tongue in/on all the naughty places)
A well-produced video session (camera work, lighting, makeup, small crew, etc.)
Raging thunderstorm
Beach in the winter (snow/ice)
I'll stop now...