Staples is offering a free reusable bag, along with 20% off everything you can fit in it when you use the printable coupon found HERE. Offer is valid through 12/27. Here are some more deals worth a mention.
Charmin Basic 24 double rolls $7.99 (with coupon)
Final Price: $0.33 per double roll
Staples Multipurpose Paper 500-sheet ream $7.79
-$4.98 printable coupon
Final Price: $0.01