Survivalist Tip: You can’t have water and air purifiers in your home if you don’t have a generator. Remember, the utility companies will malfunction with the sudden shift in the Earth’s axes. While that may be a good thing – since they’ll pretty much get what they deserve after years of screwing you with bloated rates and miscellaneous service charges – you’ll otherwise be out of luck. But, that generator must be battery-powered. A generator will keep some necessary appliances functioning smoothly, such as water purification units, floor fans, heaters and coffee machines. Besides, the low-frequency humming sound a generator creates will keep away undesirable creatures, like insects, rats and anyone from the power company who survives the upheaval and hopes to collect on your electricity bill.