Elspeth, I am guessing that all the things that make an ftm happy (not using this word esp in the way that the OP did) would make an mtf unhappy and vice versa. It's the nature of being trans. I always think it is quite ironic, esp since I have an mtf girlfriend.
BTW, I like being in boxer briefs without anything else, but don't like nudity even by myself because of dysphoria. Not worry about anybody else seeing me or something. There is also the evil mirrors.
--Jay