If you shift-click a backpack from your inventory that way so, if you kept the inventory, it would go in the slots the backpack gives, the backpack will remain in the backpack inventory area even if you don't have it anymore, if that makes sense.
Here's a screenshot of doing that, and then equipping a birch bark backpack.
Jalpha wrote:I believe in my interpretation of things.
"The psychological trials of dwellers in the last times will be equal to the physical trials of the martyrs. In order to face these trials we must be living in a different world."