I have an idea here which imma use it when my bf's bday.
Inspired by unker spanker and txzean.

If you or your bf lives alone would be better, if not you can try it in your own room, but make sure your family won't distrub you. Or you can go to hotel.

Get naked and cover your tits with ribbons, small 1 and a sexy underwear.
Prepare the cake. Ask him to tell you when he's coming, turn off the lights and light the candles.
After bday song and blow the candle, turn on the lights, suprise !!!!

Now for the present, make it a big box. Put whatever you bought for him first then cover it with anything you like.
On top of it put a box of condom Get some special condom.
If he doesn't use condom then get some sex toy.

Believe me, he won't forget that day ever !