If you still have the wrapping paper from your Christmas gifts, don't throw it away! Personal finance weblog The Simple Dollar offers several tips for reusing giftwrap, cardboard boxes and food leftovers. My favourite tip is to use shredded gift wrap with paraffin and an egg carton to make firestarters.
We've covered the method before using dryer lint but shredded wrapping paper works just as well and reduces what you throw away.
The rest of the tips include making wrapping paper into origami and paper mache, using cardboard for photo backing and making stocks and stews from leftovers. See all 20 tips at the source link below.
Dealing with Christmas Leftovers [The Simple Dollar]