watertight non pvc fits a monsterbox 8-15 euro at farmer store
pm burial tip
I think this may work. In Bosnia 92-95 folks hid mines by adding cans and trash that would screw up metal detectors. After some time those cans and trash were an indicator for mines and folks avoided that area. It may not work but it would drive some folks crazy and make them give up. Gold and silver are nice but dead is forever.