I've read so many articles on swag and whether or not it's an important marketing tool. Some say only spend money on paper products like bookmarks and postcards because they're low cost and easy to ship. And you can sign them--people like autographs from their favorite authors. Others say never spend on paper since these often go in the trash.
Of course, if you enter the drawing during my summer blog tour, there will be other cool prizes in addition to my adorable kitty USBs. You'll just have to participate to find out what they are!