If your hubby accept :
to lie on his back on the bed,
You can sit on him, and enjoy some ride,
take a towel and put it on his face, don't stop the ride,
take this vibe with the "longest" shaft and
switsh it on when the end of the vibe is against your asshole,
let it enter in your ass,
and search with the tip of the vibe the tip of hubby shaft.
For you feelings will strengt all your sphincters,
for him it is your entire vagina who will tighten and vibrate.
I wish you succes,