This category is for companies that sell advertising specialties, promotional items, and customized products that promote a business or organization. The term schwag refers to all manner of logoed stuff given away by companies to get people to remember them, feel good about them, have their phone number and website at hand and generally make them think about them before any of their competitors. 

The original spelling is "swag" (for Stuff We All Get).  A little web research has revealed that there is definitely a widespread use of the term, but no real consensus on the "correct" spelling. One site explained "schwag is what the coolest of the cool people say" and another site indicated it's "called schwag if the item is particularly good."