Outdoor and Shower Pools, Tubs, Shower The showers are made from stock-watering tanks from the Ideal Stock Tank Co. and have waterproof canvas curtains. Less expensive than prefab shower-tub units, stock tanks are built of weatherproof galvanized steel and are sturdy enough for cows to drink from—–and, ergo, for you to bathe in.  Photo 9 of 13 in Diamond in the Rough (and Ready)