The little bottles of sand on the left are saved from beach trips when the girls were little. The test tube is a "letter in a bottle" with sand and tiny sea treasures in with it.
Enjoy. If it is hot where you are, try to stay cool. And remember all the little critters outdoors are suffering too. Leave out a shallow dish of water in your yard in the shade if you can. The birds will enjoy a cooling bath and the littlest animals will appreciate a cool drink. I watched three chipmunks enjoying a refreshing drink in our bowl yesterday and the robins were out in force in the bird bath. Stay cool!