These are End of the Year Luau/Beach party ideas from prior years.
Food: Cheese ball appetizer shaped like a volcano with strawberry jelly as lava, fruit, macaroni shells & cheese.
Decorations: beach balls, shells, leis, drink umbrellas.
Games: beach bingo with Starbursts as markers, musical chairs with beach towels, coconut bowling, beach bucket toss (with 5 beach buckets & either balls or pool toys to throw in each one), limbo, freeze dancing (or "wipeout") on surfboards with music, hot potato with a beach ball
Gifts/Favors: luau/beach stuff with their Hawaiian names on nametags (I found a website that would "translate" their names).
Crafts: Paper plate fish (Cut a triangle out of a paper plate to make a mouth. Glue the triangle on as the fish tail. Paint/color fish. Attach eye.) Cut surfboards out of cardboard & have kids decorate with markers. Handprint crab t-shirts for the kids to wear.