Beer box hats are a great addition to a party (from experience). There are several steps you can use, but the most popular and innovative ideas seen thus far include a MGD fedora and PBR cowboy hat. Use a popular brand.
Well you would need a beer box for starters. Second you need a nice sturdy good quality hat. Something with a firm brim like a cowboy hat. Place the beer box on the top and then cover the brim with the rest of the box.