*HOT* FREE HP Multi-Purpose Paper at Staples! April 13, 2011 by Jennie The links in the post below may be affiliate links. Read the full disclosure.Print Email Staples is offering a ream of HP 8.5″ x 11″ Multi-Purpose Paper for FREE after Easy Rebate with this printable Staples Coupon that is valid through April 16th! This coupon can be used once per household. Remember, Staples Easy Rebates can be submitted on their website, so there is no stamp or envelope required!