1. Free delivery
To promote the nationwide expansion of its partnership with Grubhub, Chicago-based sandwich chain Potbelly Sandwich Shop is offering free delivery, plus a free cookie, on all orders placed through the delivery service from Friday through Oct. 31. “Delivery of warm, great-tasting sandwiches shouldn’t be scary,” said Potbelly Chief Marketing Officer Brandon Rhoten in a statement. “Through our expanded partnership with Grubhub, we’ll deliver toasty sandwiches free, plus a free cookie treat, so you can keep zombie-ing out on your couch or putting the finishing touches on your costume.”