What are the squishy balls in a vase?

The squishy balls in a vase are commonly known as water beads or gel beads. These small, colorful orbs are made of a superabsorbent polymer that can absorb and retain large amounts of water, expanding in size and creating a visually appealing display. They are often used for decorative purposes, in floral arrangements, or as a sensory play item for children. Additionally, they help maintain moisture for plants when used in arrangements.