A Stash Battery is perfect for stealthy storage to keep valued and private possessions hidden safe from the prying eyes and probing fingers of dodgy housemates, younger siblings and burglars.
For all intents and purposes it looks like a standard and rather unexciting battery, until you screw off the bottom and the excitement is released, assuming you keep something exciting in there.
There are three sizes to choose from, depending on what it is you need to keep stashed safely.