What item(s) from your BoB would you try to take into a "Crisis Relocation Camp" if you were rounded up??
This is a rhetorical question since we all know that such doesn't exist and there are no plans for any such animals!
I would try to keep my blankets/bedroll/sleeping bag, messkit/knife, fork, & spoon, and my
Bic/matches/firestarter(s).
The blankets/bedroll/sleeping bag helps to fulfill my shelter requirements.
The messkit, besides the obvious dining purpose, could be used as digging tools (for gardening), a minor defensive tool if you still have the knife.
The Bic/matches/firestarter(s) provide the means to have warmth, cooking, and would be a morale booster.
This supposes that unlike the Nazi's, you would be allowed to keep anything.
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QMC, USCG (Ret)
The best luck is what you make yourself!