You could make a fresh pineapple salsa. It's very easy to make and pretty too!
Just dice the pineapple into small pieces. Add 1 small, diced red onion and juice of 1 lime. Mix, cover and refrigerate an hour or two. This can be used with fish, shrimp, chicken, etc. Delicious.
Note: If you have access to key limes, use them, but otherwise, regular limes will work too.