l you need for this project are some common household items you probably already have. A little Borax detergent booster, yellow and green food coloring, and a 5 oz bottle of some clear non-toxic school glue.
Borax can be found as a detergent booster under the name "20 mule team Borax". It's a natural mineral with a chemical formula Na2B4O7 • 10H2O. The IUPAC name for borax is sodium tetraborate decahydrate. Borax also is known as sodium borate, sodium tetraborate or disodium tetraborate.
If you don't have access to Borax, I've heard that liquid starch can be used instead. I haven't tried it, but let me know if you do, and how well it works? Just mix 1/2 cup liquid starch (eg. Sta-Flo) with an 8oz bottle of glue (should be the whole bottle).