Today and tomorrow (Expires October 19, 2014) you can get a free case of spring water at Staples with the coupon. It doesn't appear to have a minimum purchase requirement so you can walk into your local Staples and just get the free case of water. The brand of water that you will get depends on your local area.
Valid 10/18/14–10/19/14 in Staples® U.S. stores only. Discount applies to regional spring water, cases only, item nos. 322918, 383829, 395312, 396724, 396936, 396727 and 452168. Not valid in NYC metro markets. While supplies last. Plus tax and deposit where applicable. Limit one coupon per customer, nontransferable. Each item purchased can only be discounted by one coupon, applied by cashier in the order received and prior to tax. Coupon not valid if purchased or sold and must be surrendered. No cash/credit back. Not valid on prior purchases or purchases made with Staples® Procurement or Convenience Cards.