This year I am going to make bins for each unit in science with materials that we might use each year. I haven't collected much so far, this will be a work in progress! Don't mind the unattractive label this will be updated soon!
So far I have...
transparent colour changing glasses,
paint colour samples (Oh Home Depot, how you must think I am some crazy lady)
AND my colour bulletin board!
What would you put in your creating colour materials bin?