You can get 140 free return address labels from Vistaprint. You pay only $2.95 shipping.
Instead of filling out the three lines with you name and address, make the first line the word "To:" and on the second and third lines, fill in "From:" And your family's names.
Use these as gift tags on all the holiday presents you'll be wrapping.
Thanks to MoneySavingMethods.com for this great idea!