This Belgian website has a staggering array of antique miniature guns. They have guns shaped like a crucifix, whip, watch, fish hook, and a padlock, only to name a few. Every image in the gallery is a weapon in disguise.
Each of these items is considered an antique. I find them all totally fascinating, especially when they come in their original boxes.
To see more detailed images of each gun, including how it functions as a weapon, click the link below. All of the antique guns are for sale.