With many more items like iKEA smart bulb controls and motorized blinds it makes sense to think out your battery supply chain in your house.
For me currently I keep my main battery stockpile in my pantry which is the warehouse of my house. But I keep a box like this easily accessible on each floor of my house:
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Does it seem like overkill? I don’t think so.
I think it’s great because it makes it fast and simple to deal immediately with problems like on my bedroom I had to resync my iKEA smart bulbs with the controller. Since I had a screwdriver from my local toolbox and a spare battery for the controller it was an easy problem to solve while waiting for the bathroom.