15.Scare Up Some Slime
. . . and, come Halloween time, some spider-covered slime that even glows in the dark!
16.Grow Some Snowflakes
Less into the fall holidays and more about winter? Borax can help you out there, too! When you mix it with boiling water, put it in a jar, and then insert a pipe cleaner mold, Borax crystals will actually grow overnight and make a crazy cool snowflake shape.