Staples office supply store is a great location to stock up on office and school supplies year-round when you stack coupons with promotions and sales. Staples does accept manufacturer coupons and offers store coupons frequently in their ads and on their website. Look for advertisements for products that are free after Staples simple Easy Rebates or Staples Rewards. During back-to-school season, check out their penny and dollar deals to stock up for the year. Sales run Sunday through Saturday.