Call it slime, gak, gunk, flubber, or whatever. I decided to make this "flubber" gunk with the boys. It's easy, inexpensive, and actually pretty fun to play with. There are a lot of versions of this, but I used the recipe from this site. The ingredients are easy to find: Elmer's glue, liquid starch (found in the laundry detergent section at the grocery store), and food coloring.
Measure out 1 cup of Elmer's.
Add a few drops of food coloring (we did some blue and green drops), and stir together.
In a separate container, measure out 1 cup of the liquid starch.
Slowly add the starch to the glue mixture, and mix together. It starts to come together pretty much immediately.
You can work it with your hands after a while to try to soak in as much of the liquid as possible.
I set it on a plate before we played with it so all the excess liquid could drain out. After a few minutes, I just poured off the liquid.
Then we were ready to play with it. I split it into 2 sections so each of the boys had their own.
They pulled it...
And stretched it...
And watched it do this...
This is a very non-messy, entertaining activity. In fact, Lex stayed entertained for the better part of an hour with this stuff. The squeezing and stretching are also good for developing fine motor skills. Another bonus: It stores easily in a sealed baggy so you can play again another day.