I previewed the Staples weekly ad for next week and saw an offer for by $100 in gift certificates, get a $10 gift certificate by mail. Offer excludes Staples, Visa, American Express, and Mastercard. I'm not sure of all of the gift cards they offer.
Other sale items include (but not limited to):
$2 Crayola markers, assorted
$2 HP Multipurpose paper after easy rebate
$1 Expo fine dry erase markers, reg. $5.49
There's also a $2 off any UPS shipping. If you need to ship something next week, take advantage.