The ones he has so far are;

"Happy Birthday"
She gets a spanking then blows out his candle.

"Good Vibrations"
See how many vibrators you can fit in various available holes.

"Wash & Wax"
Give her a shave followed by a candle waxing.

"Ring Bell for Service"
Hang bells off of her nipple rings/clamps, with her wearing very tall heels or dangling precariously somehow, a shakey position, and tell her "Every time you want a lash, just ring the bell"...then give her a single quick stroke every time a bell rings.

These are kinda the "flavors" he's going for...so, any suggestions of things along these lines?