As a fun thing to do, I started making beer hats, very nice quality, out of empty bottled beer six-pack boxes, like Miller or Budweiser, etc. FYI, it takes 3 boxes to make one hat. Some friends have suggested that I should be selling these, but we have disagreement about whether we would be doing some kind of trademark or logo infringement. My position is that when I bought the beer I also bought the box, it is my box to do with as I please, and there are no printed restrictions on the box. It's not like I'm using the beer companies' logos and printing them on t-shirts, for example; I'm using their actual and entire box. Opinions?