Thanks, Schwert. Those look really good for what I have in mind. Waterproof and sturdy. Probably one of those would even be the perfect size. Unfortunately they do not publish the interior dimentions. Maybe I can contact the manufacturer for specs. Meanwhile, if anyone has any of these and you happen to know if it would fit a standard flashlight bulb (the common kind that come in most cheap 2D flashlights), the info would be much appreciated.

Thanks!