This one’s for toddlers- they might not be able to cut yet, but they LOVE to tear things. Just have them tear up pieces of colored paper (if your kiddo is really little, you may need to start the rips yourself and let them go from there), put a dot of glue on the back, and let them stick it onto the big piece of paper. Of course you can have older kids do this too (they still like to tear things up!).
-Use torn paper collages as an activity to help learn colors and shades. You can even have them go on a “color hunt,” searching through a magazine to find specific colors.