Plastic Barrels & Cans (35590)
1:35 MiniArt via Creative Models Ltd.
Plastic barrels are pretty useful, as they're light when empty, recyclable, can hold liquids that metal barrels can't and are often more resistant to impact without permanent damage. In addition they don't use up much in the way of strategic materials, so you're onto a winner. Civilians and military use them extensively, and wherever there is engineering going on, you'll usually find barrels dotted around.
This set arrives in a shrink-wrapped figure box, and inside