Water beads!

These come in the form of the tiniest beads, you add water and they turn into these water beads. You need to place the beads into a large bowl, add lukewarm water and leave for 4 hours, go back, replace the water and leave another 4 hours. I left them overnight and they grew to a pretty decent size.

They actually bounce! If you squish them, they will pop, feels like jelly inside!

We re-used them in the bath but be careful doing this and don't let them go down the plug when you're done as they may cause blockages!