Office Depot has 30% off a qualifying order of $30 or more. There are quite a bit of exclusions but maybe somebody will find a diamond in the rough. Click on the banner at the top of the Office Depot homepage. It seems the coupon codes are generated as you visit the site so everyone's will be unique (I got a different code on both my laptop and phone).
Exclusions: Gift or Prepaid Cards, Coffee, Seating and Furniture, All Technology, Case Paper, Ink & Toner, Postage Stamps, Value Business Cards, All Label Printers and Tape and All Appliances. Minimum Purchase Required is Before Taxes and After Discounts. Limit 1 Coupon Per Customer. Expires 11/18/2017