I am throwing a Surprise Luau Birthday Party for my hubby. Any suggestions for appetizers?

The Theme is....Luau. The main course is coconut shrimp, chop sui, PIG and BBQ chicken. The sides are: rice, rolls, pasta salad and salad....drinks are: this aloha punch and water (for those who don't care for the punch)...so, im just stuck on the appetizers.Id like something very simple.