It's a fairly straight-forward request, don't you think? I have no ideas for plot or any specific requests as far as characters go. Bondage ( light or heavy - whatever floats your boat, yeah? ) seems natural, and possibly non-con, though to which extent is also open.
I know it's a vague request, but if the words "steampunk" and "slave" tickle your fancy, let me know, won't you?