We have several pens around the house that have advertising on them as well as several calendars.  Companies are pretty clever to put their ads on things people often use.  We don’t have any custom usb drives with advertising on them, but I know they make them.  Sometimes the products with ads on them can turn out to be pretty good.  One time we had a couple of pens from a hotel that lasted forever.  Those are the type I like to get, quality products!