Here's a simple idea that won't cost you anything. Wear your favorite swimsuit and beachwear for a summer beach theme. Personally, I've always wondered what the beautiful ladies of cerb might be wearing when they are sunning themselves at North America's unfortunately prudish beaches.
And of course, if we're at the beach, then we need copious amount of lotion slathered on each other.
After a bit, we can move down to a more private part of the "beach" where we can get a tan without the tan lines!
Beverage suggestion: Sex on the Beach of course!