Lets go shopping: The Bike Chain Bottle Opener.

Via: nerd approved

"Sure, I have seen all those wannabe chain bottle openers out there. But they do not hold a candle to this one for two reasons. First, the chain actually moves on both sprockets just like it was on a real bike. Second, it comes with a holster so that can carry it around with you at all times. If that doesn’t seem cool enough for you, there is a guard that looks just like the chain guard on an actual bike. Oh yeah, it does actually open bottles as well. Can’t forget about that."