the watching them grow was the best part, I don't know why i wanted them all the time.. or where those sponges ended up after the few seconds were done that they grew..... if the sponge dissolved as well, then maybe they would be even more preferable! .. but then again who buys something that will just dissolve anyway..
ooh unless the sponge came out really cool, put on a great show.. it would be like those flowers that bloom once every 100 years, or a firework.. everyone gathers around the little dish of water to see which dino will emerge....