Juice packs (which give you an emergency charge) are also good for anyone in a blizzard- or hurricane-prone zone who suffers frequent power outages. Those of us who live in such areas tend to keep a few on hand but are always interested in trying new models or brands that may give you a longer charge or have other advantages.

Battery-operated lanterns are good, too. If you want to play those board games you like, a lantern will give you more light and safety than things like candles or flashlights.