Lots of lights scattered about the house but not much "strategy". In the fairly rare event of a power failure, extra light is never far away. Thankfully we don't get hurricanes, tornadoes are rare and localized, and blizzards don't seem to trouble Manitoba Hydro as much as wet snow and pole fires.
If I have pants on, I have one or two keychain lights - currently a RovyVon A8 and a Fenix UC02. Bedside table has at least my 14-year-old Quark AA, plus whatever random flashlights I unload at the end of a day - the S2R Baton lives here or in the basement shop or parka pocket depending on what's going on. The better half has a Fenix UC01 in her purse which I'm not happy with and will replace some day since it often is dead when I check it.
Master bath has a little angle 1xAAA light, mostly used for checking teeth. In the kitchen I keep my old Maglight 3 D cell - with instructions that this is the only one that can be loaned out if the neightbor needs to borrow a light.
Basement workshop has my Quark 2AA for the tool bag, and my much loved Fenix LD02 on the magnetized tool rail over the bench - this is the light I grab when peering deep into recesses of things to see if its a slot, Phillips, Torx or tri-wing bit to take it apart. The laundry room has a nameless 2D cheap light that originally came with a PR2 but which got an upgrade to an LED when I found a bunch of them on clearance - it's dark in the laundry room if the lights go out, plus it gets used to find things that roll under the washing machine.
The car has my old NextTorch P8A when I got tired of replacing 2 x C cell lights for the car, as well as an Everyready headlamp and spare batteries.
Supplemental lighting that could be used portable if needed is a bunch of old Ikea motion sensor lights running on 3 triple A cells - I'm using Ikea rechargeables in these, which mostly serve as lights in the closets but which could be demounted for use elsewhere. One time I set one in the main floor "guest" bathroom for the convenience of overnight vistors. I picked up a couple of GE 6 x AA motion sensor lights for improved closet lighting - and loaned one of these to a niece who wanted a camping lantern for a weekend. Lots of light, adjustable to a low glow, and the motion sensing makes them useful as night lights in a tent.
It's just occurred to me that I don't have a light for the garage - if the car is home, I'll grab the car light and use that, or if I have some project in the garage I'll put on my Olight H2 headlamp. The garage is unheated, so that's hard on batteries...though the P8A has been kept in the car for a couple of winters now and the LiIon battery seems to be just fine. (I never charge it when the flashlight is below freezing.)
All of these get semi regular use - a few old or odd items like the Fenix TK70 never get serious use any more (last time was dog walking just to see if it still works), and the only reason I keep another 2x D with a PR2 bulb is to compare it with modern lights!