I gratefully acknowledge Anne Marie Helmenstine, Ph.D. for her great post on this subject and the accompanying recipe:
Homemade Goo (or slime)
Ingredients:
1 c water
1 tsp borax
1/2 c Elmer's or school glue (one 4oz bottle)
1/2 c water
Instructions:
- Mix the first two ingredients in a bowl
- Mix the next two ingredients in another container, preferably one with a lid, so it can be used as a storage container. Stir well.
- Dump the borax-water solution into the glue solution. You'll be amazed, the stuff starts glooping immediately.
- Add food coloring if desired.
As far as food coloring goes, you can add it to the goo anytime. We attempted to make a rainbow tie dye version, but eventually, the colors just run together anyway.
This goo will keep for two weeks in a sealed container. My kids, including my rambunctious boy and his high energy best friend will play with this stuff for at least an hour and making it is part of the fun. The goo will get into clothes and may not come off right away, but since everything is made of water soluble ingredients it comes out in the wash just fine. Great for indoor days, when you have no power or when you just need the boys to stop jumping off the couches for a spell.