I voted for the fetish one, although I guess my kink is pretty broad -- I'm very much into being submissive. That can go with a lot of other stuff, equipment, roleplaying, etc, or it can just be a simple power game. My husband also has a thing about breasts (on the level of a fetish), so we have incorporated that into our playing a lot. Neither of us was very experienced before we met, so we really enjoy playing with each other.

I envy our friends who have more disposable income and are always trying new and different toys, restraints, etc, but it doesn't really take a lot of money to have fun in bed with an attractive partner.
EDIT: I forgot to include squicks. That would be: anything involving overt sexism (in the sense of "femininity = humiliation"), waste products, tickling -- that one's not so much a squick as a phobia on my part. Adult babies and extreme ageplay* people don't exactly squick me out, but they are turnoffs for me. A foot fetish would also be a no-go because, well, my feet are very ticklish.
*Mild ageplay, as in teacher/student, is not a turnoff, but baby/daddy definitely is.