Here is a cute craft idea to do with the kids this summer.  Cut a paper plate in half and paint it into a watermelon.  You can use just paint to make the watermelon, or, you can use actual watermelon seeds.  To do this, make sure the red paint is pretty thick and the kids can put the seeds right onto the paint- no glue needed.  Once the paint dries, the seeds will stay on the paper!