I continue to slowly put together a terrain collection. You really can never have enough scatter terrain. These pieces are from Crooked Dice, who makes a lovely collection of miniatures and terrain.
Crate Pile (wide) 
Crate Pile (tall)
These crates would fit into just about any setting. Fantasy, modern, post-apoc, pulp, you name it.
Barrels (small) 
Barrels (medium) 
Barrels (large)
The barrels as painted are more of a post-apoc, though they’d probably fit into a modern setting well enough, if it’s for a ramshackle location. The weathering is a bit haphazard, but that’s what makes it fun.