Back to school supplies can get expensive fast, but for the next two days you can get a bit of a reprieve at Staples and save $10 off $100 or more. Perfect for picking up expensive scientific calculators or smaller items like folders and pens. Apply coupon code 51868 online or over the phone to save. Code will work on any item at Staples that is not part of the promo exclusions. Deal ends 8/25.