Everyone wants their bike to be unique, having a custom headbadge is an extremely easy way to make this happen! The folks at the Bicycle Escape have a series of bottle cap headbadges to do just that.
http://bikeslocounty.org/wp-content/uploads/2011/09/bottle_headbadge.jpg601800coalition2001http://bikeslocounty.org/wp-content/uploads/2015/07/BSC_RGB_340_TEST1.pngcoalition20012011-10-03 15:02:162013-12-03 11:23:02Bike Hack: Bottle Cap Headbadge