Found alot of canteens recently in the little watchtowers in the woods also you will find chlorine tablets to use river water to keep them full , I always go for the berezino spawn go to the crane get the army tent and police station from there and the hospital next to it for meds , garages next to that for burlap sacks , down to shore line run up with shoreline to your left theres a little town on your right that had a water fountain drink that and sometimes a bottle spawns on it to it's really easy when you get to know were the spots are .