Use a spoon to carve out a cucumber half. Fill with Tuna Salad. Add radishes and carrots on top as people with paddles.
Tuna Salad for us is:
Tuna, Mayonnaise, Chopped Onions and Celery, Seasoned Salt and Pepper
Adults will enjoy this too! It can also be made Mayonnaise free using the scraped out cucumber seeds and looks more like this: