For many of us, knitting is relaxing. But when the yarn inevitably becomes tangled, it can feel more like an exercise in frustration. Here's one way to keep things from getting knotty. Gather empty cookie tins left over from the holidays, or purchase new ones. Apply a coat of oil-based enamel paint in any hue to outside of tin and lid; let dry overnight. Using a grommet kit (available at hardware stores), attach a grommet to the lid's center. Place ball of yarn inside, and thread an end through the grommet before securing lid.