I completely ripped this off from the Kiddo's daycare. But my fabric cabinet is hard to close lately, so anything that uses up some scraps is a must-do-project.
Have you ever seen a toddler sit and pull kleenexes out of a box and throw them in the air? Same principle.
I cut my fabric scraps into strips, shooting for about 2 or 3 inches wide. Then I sewed the ends together to make a big long strip. While I suppose you could make this all hemmed edges and neat stitches, I think quick and dirty is the way to go here--close is absolutely good enough!
Once I had a nice big long ribbon, I stuffed it into an empty cheerios container. (Can't think of the name of the specific product--they're like, little apple cinnamon rings that look like cheerio-flowers?) The Kiddo hasn't quite gotten it yet--he likes to pull out 3 or 4 feet and then toss the whole thing to watch it flutter--but I'm confident that he will soon discover that is enough ribbon in there to make a really good mess if he wants to!