I recently looked up “sensory bottles” after googling/pinterest/searching for pirate party ideas. Those don’t seem to go hand and hand- but they DO. I wanted to find a craft that would allow people to make their own sea in a bottle. DEFINITELY give a trial run to anything you google for party crafts. I learned so much.
Water beads: these awesome tiny beeds the size of a seed pearl that grow to the size of a marble with water. They stay hydrated for like… EVER. So don’t grow more than you need. I bought mine on amazon.com in a pack of 2,000. I’m a prime member so had to go more expensive. You can do a LOT better on pricing if you plan ahead about a month.
THEY ARE SO MUCH FUN. However, if you spill them before expanded you will be sweeping them up forever from here and there. Also, if you have a little one like me who might eat them- beware. I have nightmares of Little M eating a handful of pre-watered beads and exploding her tummy. They watered beads also are about the size of a blockage for a baby trachea, so that also is a little terrifying as a choking hazard. Yet we STILL have them and put them on trays for fun and put them in bottles to float up and down. I wish I had ordered solid colors for the water bottles, because the transluscent colors don’t show up as well in the bottles and aren’t as dominant as the solid color beads. The science I love to play around with, but hate to have in my house because they can be a mess. I have a cookie tray full of them that have been drying out for weeks.