Sand Slime DIY. Our family spent a day at the beach this past weekend and my kids had a blast playing in the sand. We decided to recreate the fun at home, but with a fun twist, and made sand slime! The kids loved oozing the sandy goo through their fingers. To add an element of science fun, try experimenting with different ratios of glue and liquid starch to form slime of varying consistencies. beach. summer. kids. easy. project. crafts. sensory. slime. homemade. glue. recipe. how to make.