Spicing things up?

Hey everyone! I need some advice. My boyfriend and I have been dating for a little over a year now, and while we don’t have sex(I’m not quite comfortable with that yet) we do still have spicy time. I’ve been wanting to try something new for a bit now but I’m not sure what. We can’t buy toys or anything along those lines bc we don’t live together (I’m 18 and he’s 19). I’m coming to you all to ask, what can we try to mix things up a bit? It’s not that I’m bored when we do have fun, but I wanna stray a bit from the usual things we do.

For reference: I’ve had him spank me, pin me against the wall/bed/couch, hold my hands above my head so I can’t move, call me names. I’m not really into the whole choking thing bc it’s uncomfortable but I thought I would just throw that out there.

Thanks guys!