Mine have a ball with it and it keeps them occupied for days.
1 box of cornstarch
1 1/2 cups water
food coloring
Put the cornstarch in a bowl, add the water and food coloring and let your children mix it up with their hands.
Squish, squish!
We made ours blue to begin with.
It was real soupy at first but it stiffened up a little as they played with it.
It dried out overnight.
As far as clean-up goes, it was a breeze. The goo dries pretty fast and I just used a rubber spatula to scrape the drips off the table, then wiped it down.
Don't pour it down the drain!
You can try this at home! :)

