And the verdict is

So we tried to make some goopy stuff. I followed the directions and ended up w/ a combination gak/tapioca feeling stuff. The kids had fun, but I'd like to try again adjusting the instructions a little to see if it's smoother. The directions went like this:

boil 2 cups water
add 1/2 c cornstarch
stir
add food coloring
remove from heat
cool
place in plastic baggies or play w/ on the table.

This time I"m going to mix the cornstarch and water cold. Because cornstarch is UBER clumpy when added to boiling water.

I also bought some plaster of paris yesterday. Excited to try some of that stuff.