While I don't want to breach the privacy of my relationship by sharing things about my SO that are private, I will just say this- we both have high sex drives, but neither one of us is particularly kinky. Trust me when I say he isn't just pretending not to be kinky for my sake. I have openly suggested kinkier things like role play only to be told that it's cheesy or stupid. We have also both tried a few things that we kept hearing were awesome and fun, and we wound up saying "screw this!" and just had regular sex.

Anyway, I'm looking for some ways to surprise him without throwing something too kinky onto him. Everyone usually tells me to throw a maid costume on or something, but I'm 100% positive he'd find this cheesy and dumb.

So far I'm thinking of giving him a BJ at random the second he comes home from work, or serving dinner in nothing but an apron but I could always use some more ideas!

Any ideas? Sorry if this is too "blue" of a question (or too vague!), but having been with the same person for a long time I want to make sure I always keep him guessing at what I'll do next in the bedroom, and I don't want to bore him. Open relationships/threesomes are strictly a no-go.