We're calling them the "know" "no-duh" tips.  Most everyone knows for instance, not to warm your car up in the garage. Or to be sure your pets have water available that's not going to freeze in cold weather.
That's the "no duh" advice and here's some less common ones that may help you be in the know.

For Your Home:
  • Open Cabinet Doors
  • Keep Heat Steady
  • Run a Little Water
At home, open cabinet doors, to allow heat to hit your water pipes.  Keep your thermostat set at the same temperature around the clock to prevent frozen pipes. And if you have any that are vulnerable to freezing temperatures, run a small trickle of water.

For Your Car:
  • Check Anti-Freeze Levels
  • Check/Replace Belts & Hoses
  • Carry An Emergency Kit
  • Calls for roadside help, according to AAA, spike during cold snaps.
You already know many of the things the experts tell us about keeping our cars running.
A few tips you may not have thought of, include having an auto shop check your anti-freeze mix.  And while they're at it have them check belts and hoses and replace any that might snap during the cold.  And if you're traveling any distance at all, be sure you have an emergency kit in your car.
More tips from AAA:
  • Antifreeze. Check antifreeze annually to ensure it will withstand the winter cold. A 50/50 mixture of coolant and water will protect against freezing.
  • Windshield wipers and washer fluid. Replace wiper blades if they do not clear the glass in a single swipe without streaking. Fill the windshield washer reservoir with winter detergent fluid to prevent freeze up.
  • Tires. Cold weather reduces tire inflation pressure, so check tire pressures frequently and maintain the vehicle manufacturer’s recommended levels. Motorists should never reduce tire pressure in an attempt to increase traction on snow and ice. This does not work and leads to excessive tire wear. Motorists in areas where it snows should make sure their tires have an M&S rating, which means they provide the added traction required in snow. In areas that have heavy snow fall, using snow tires and chains during winter months provides added safety and may be required by local laws. For best results, snow tires should be fitted to all four wheels.
  • Battery. Check for a secure fit and clean away any corrosion on the battery, connectors and cables. If the battery is out of warranty, it’s advisable to have it tested before cold weather hits.
  • Belts and hoses. Replace accessory drive belts that are cracked, glazed or frayed, as well as coolant hoses that are visibly worn, excessively soft or bulging. Check for leaks around hose clamps and the water pump.
  • Other important areas to have a certified technician check in preparation for winter include the vehicle’s fluid levels,lightsbrakesexhaust system and heater/defroster. Motorists should also remember to continue regular oil and filter changes at the intervals recommended by the vehicle manufacturer.
  • Do not warm your car up inside a closed garage due to the danger of carbon monoxide poisoning.