I'd like to see from Anker in 2017 use of the LED technology from the Lumos with the flatter type Powercore battery shapes to make a Powercore with a bright deskside light. This is for those who want a personal light which runs off battery but not the pointed harsher light of the torches type. Rechargeble, obviously.
You could then give this battery a setting (say double-press fast) where if the mains input power to it goes out, then it turns its light on automatically (say just a single press turns light on or off). If you added a small sensor, then it would only do this if sufficiently dark. You'd then have a device which a consumer could buy multiple of, place around their homes and if the mains power ever went out, they could then have light on automatically so they are not stumbling, can be guided directly to the Powercore to then recharge their phones, guide by the light.
This would then be a good gift to someone who either suffers a lot from power outages, or has a concern of such. Buy 2 or 3 for a typical home.
If you wanted.... not necessarily a good so you could make 2 models, 1 with this idea, 1 without this idea, you could make it come with the charging electronics built-in so it plugs into the mains socket, folding pins type. Then you just plug these into the wall, and if mains power cuts, they turn on their lights and can guide you to them to use to recharge your device or simply use them as pre-charged portable torches. You'd then possibly find people buy them for a soft lighting around a room knowing they are backup portable power and backup lighting easily found in a blackout.