Salt
Colored chalk
Glue
Construction paper
Imagination
Hair spray

Pour small amount of salt in a butter dish lid. Rub chalk over salt. You can do many different colors and layer in a glass baby food jar for a rainbow paper weight. Also, do different colors, then make a design (trace leaves on paper, etc.) and then pour colored salt, one at a time, onto glued paper. You can also use it to practice math, spelling, etc. Spray finished paper to hold salt.