I can say that with the touch of the sea shells on the glass bottle, it sounds like a real ocean breeze.
I added just a little colored water to the molds and kept it 15 minutes in the freezer and then added another color of water to get another layer and put it back again to the freezer. Repeated this until all the molds were full with water yet to achieve very thin and colorful layers. After that, we melted our galaxy bars with plenty of glitter. The colors were actually much more vivid than those visuals.
We normally use salt dough to make hand/foot prints to save as a nice memory. But this time we tried to make fishes. After giving shapes, we let them dry overnight and then colored with watercolor.
This is one of the simplest sensory play. You don’t need many things to create a sensory setup. And I can say that ocean theme always works great for both girls and boys.