Use code 25172 and get $15 off any purchase of $15.01 and more at Staples.com.
It works on gift cards!! (Thanks belarus94 @ SD). Get a $50 gift card for $35 and have it shipped free! (Not sure if the code will work on Staples GC’s , but I used it on another store’s GC with no problem.
**UPDATE** There have been reports that this code may have been a mistake. So if you used it, Staples may cancel your order.