The Storex Activity Tray is specifically designed for kids' arts and crafts time. The raised rim keeps beads and balls from rolling away while the non-porous surface contains messy spills from paint and glitter. These art trays are great for coloring, slime and kinetic sand activities. Stack multiple trays one on top of the other for an ad-hoc drying rack. Perfect for art class or party activities, the Storex Activity Tray give kids mess-free creativity time.