My son and daughter were born 8 days apart...in different years. This proves to be a challenge when planning birthday parties. I've resorted to having their parties at the same time. This year we did a pirate and mermaid themed party.
Activities / Games
Snowcone truck, water slide, pinata stuffed with water guns, and a snowball fight
Little Mermaid Bubbles and Shell Bracelets for the girls. And a canvas pirate bag filled with a sword, pirate teeth, necklaces, ring pop, a telescope and golden coins for the boys.