Add different coloured florescent paint to water beads for a very effective sensory room art activity. This can get messy so make sure you have a plastic sheet down as the water beads bounce everywhere. I dropped the paint-covered water beads on to black paper in a large plastic storage box. The beads make a lovely sound when they hit the bottom & bounce all over the paper.
This would make a great art activity if you were replicating the work of Jackson Pollock.
If your classroom topic was themed around the weather, you could add fluorescent blue paint to your beads, when they hit the paper the beads would pitter-patter like the sound of rain, whilst creating lots of little blue raindrops.
This sensory activity could but adapted to suit any theme with a little imagination…I think the final picture in the video looks like a field of Spring flowers.