Okay everyone! I have searched and found these three types of water beads! The Xploderz are sold in the boys toy section with a gun. But these are the refiles and this is the pack to get. These were $4.99. The packet in the middle is the best value. I got them at Michael's. They have the most in the packet and were only $2.99. They come in tons of colors. Michael's also had them in a jar already hydrated. I think seeing the beads grow though was half the fun for my class! The last packet is called OrBeez and they are sold in the girls department. They are about $4.00 and come in little packets all in a box. They too come in lots of colors. A friend mentioned to me the ones at the Gardening section, like the water gems say keep out of the reach of children-however that is because they could be a chocking hazard You would have to have a pretty large eater to chock on one. They are so small. If you have kids who mouth thinks I would not recommend these. My class is past the oral stage so we love them! Next week we are adding shaving cream to them!!! Stay tuned!