Blindfold him. When he cannot see, his other senses are heightened. Then you can do a number of different things. Here's some suggestions:
1. Feed him different things, and have him guess what it is. Ex: melon, chocolate covered strawberries, any other fruit he likes, bites of brownies, a spoon of whipped cream, teddy grahams, Ande's mint, dark chocolate....and mix in some strange ones to keep him guessing like lemon drop, pickle slice...whatever!
2. Kiss him in different places. Lips, stomach, knees, 'inside' the elbow thigh, behind the ear...
3. Touch him with different things and have him guess what it is. Ex: a feather, your hair, fingers, paint brush, tissue, and maybe something cold (ice cube...yowza!)... or warm/hot (heat a marble or something else in some hot water).
4. Tie him up! You can do this before doing the others and really get him going!
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Greet him at the door in something sexy (if you don't have anything, you can put on one of HIS dress shirts and a loose tie with nothing else...he'll LOVE it!). Have the house smelling nice. Put candles in the bedroom. Lead him there and...ya know.
Shower together and lather each other up and make sure everything gets real clean! ;)