FALAMON 140,000 Clear Beads for Vases, Transparent Vase Filler, Christmas Decoration, Wedding Centerpiece, Floating Candles, Floral Decoration

Water beads look like this: https://www.amazon.com/FALAMON-Floating-Christmas-Decoration-Centerpiece/dp/B0BN11WN56/ref=mp_s_a_1_1_sspa?crid=34V80LISI3UDI&dib=eyJ2IjoiMSJ9.4av5QtSb You basically add water to them and they grow to become this bead that’s soft and water filled. You can get them In different colors, although you might need to search “sensory water beads for kids” or something.