I pinned this from Tot Treasures a while back, and we just now got around to actually making some. Most likely because it uses stuff I don't readily keep on hand...liquid starch and clear glue. I only bought 1 bottle of clear glue, so I used all of it, but I have plenty of liquid starch left if anyone has suggestions on things to make with it.
So you basically mix together equal parts of clear glue and liquid starch. I had 5 oz of glue, so I used 5 oz of starch.
Then you can color it however you want. The girls wanted green and purple. I used way too much food coloring, but they didn't mind. I just ended up with slightly discolored children for a little while.
After getting on some old shirts to play in (because of the excessive food coloring), they had funn stretching and mixing the slime.
They had a great time trying to see exactly how far they could stretch it. I think they would have played with it all day, but after Eli went down for a nap they started getting a bit careless with it. And my floor was turning a bit green, so we put it in a ziploc to play with another day.
Oh and I washed the shirts the same day, and it came out completely! I would still be careful with the food coloring, but ti seems to wash out really well.