Each year, my son has a different theme for his birthday party. He decides on the theme (usually months in advance), we work on his invite list and he even sketches his cake design for me! This year was sooooo much fun! We had a tropical beach party theme! We had water games, treasure hunts, singing PPAP (yes, that's a thing) and, of course, lots of baked goodies! Keep reading for some tropical beach party ideas!