Plastic CD-Rom containers with the spindle are wonderful for keeping your knitting projects clean, untangled, and safe from kitty paws! Many of the spindles screw right off the lid, leaving a nice smooth hole for your yarn to come through.
This tip helps you get craft projects out of the way while you are not working on them. Put all the patterns and other supplies for a craft project in a plastic grocery bag with handles.
I do a lot of cross-stitching and to organize projects in progress I put threads in snack-size plastic bags. Then I use an old eyeglass case to hold scissors and needles.