Repurpose old athletic socks into homemade "sock balls"! Use the heels as the ball and cut up the rest as filler. Great project for a budding young seamstress or tailor. Use as baby toys (add cellophane or noisemaker) or cat toy (add catnip)!
take a knitting or crochet project on the road, wash out a domed-lid plastic cup and stick your yarn in it. Needles/hook can slip in through the hole. This would be PERFECT for taking a project in the car because you can put it in a cup holder!