Loot containers
Blue Toolbox, Open
Furniture can make your place look pretty but it usually has little defensive value.
Harvest drops
Iron× 10
Taken apart with a harvesting tool (axe, pickaxe, shovel), before perks and tool bonuses.
Salvage drops
Mechanical Parts× 1-2
Extra parts when salvaged with a wrench, ratchet or impact driver.
Drops when destroyed
- Iron× 1-12
When it collapses
Falling, it leaves 
Scrap Metal Pile (75% of the time) where it lands.