K.F.
Here are a few of my personal favorites in no particular order.
It's summer time and it's hot. A bucket of ice and an imagination is your best friend.
Dress "it" up or dress it down playing off his favorite assets of yours. Example lingerie with heals or just bra and panties with heels or just heals.
Add flavor: carmel, chocolate sauce, strawberry sauce, whipped cream. again imagination is your friend. we use these things for body painting in the bathroom so you can wash them off or other wise and the water is right there.
Create fantasies. Wigs and costumes shouldn't only be for halloween.
Long dresses with nothing underneath or short skirts that would probably double for belts in some places are wonderful.
Try new angles and new places. He's your husband so make it worth his while.
Only you know your husband and what will work on him. Remember even for guys sex starts in their heads. Talk sexy to him or send him sexy messages throughout the day and be prepared to follow through. No one likes a tease.