M.C.
How about a beach party theme at your neighborhood pool? I had a surprise 50th birthday party for my husband with this theme and it worked out great. We rented to pool for 2 hours with 2 lifeguards, had food, drinks and a cake. We played beach themed music from the 60's, like the Beach Boys, Jan and Dean,... I bought some really inexpensive tiki torches and we set up a badminton net. It was a fun time!