1. Dress up a dollar-store vase with an inexpensive temporary tattoo.
2. Decorate a cake in just a few minutes by patting sprinkles onto a parchment paper template.
3. Cut your old pair of jeans up into denim yarn, then use that to knit or crochet something useful, like a small basket.
Following the how-to to cut your jeans should be pretty easy, but if you're concerned you'll cut in the wrong place, mark ahead of time with a piece of chalk. Then, once you have your ball (or two or three) of old-jeans yarn, use it to make a set of nesting baskets or a market bag.