This works best with the double patterned kind of wrapping (with color on both sides) but it also looks great with regular wrapping paper. Save all your wrapping paper, even the most crinkled and ripped pieces, fold them up neatly for storage, then when you need some nice packing material, shred it all and stuff your package. This works better with old shredders which make long strips of paper, rather than the confetti, because the smaller pieces tend to make more mess -- but either will do a fine job protecting your fragile items during shipping.
You can also use this as decorative stuffing for gift baskets or other gifts like the scented bath salts
I made for all my friends and relatives a couple years ago.