There are so many things you can do with a cock and balls, and you really do not need much money because BDSM is STILL a do-it-yourself proposition.
We have some guys here who can give you ALL kinds of advise.
There are some safety things you need to know, and if no one comes back with those I'll find them for you. But hot stuff is perfectly safe.
First of all, some things you can use for burn;
muscle rub like Icyhot
Ginger, especially up his butt (which is probably somewhere you haven't gone yet, but is a lot of fun)
Oral sex is wonderful for both of you, both giving it and getting it. Nothing builds communication like going down on your partner and learning how they react to things you do! And also, learning how to tell your partner what you need-- women are usually more complicated in this than men are. You can also try masturbating in front of your partner, to show each other what YOU do, and then you can try it for them.