Have you ever noticed that car battery just stands out more than the other well i got a little suggestion
* Working electricity or homemade generator (so with that addition that can open a broad spectrum of items and accessories)
*Lamps
*Heater (to get you warmed up faster inside)
* Working Microwave(for small foods like beef jerky or soup)
*Actual generate and refillable with that jerry can or kerosene can
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*Paper Money