One sits on my desk at work, one sits on my desk at home and the third sits on my bedside table (it acts like a clock radio / alarm clock). I just place it on the relevant charger while working / sleeping and it's always got enough charge when I need it.

(I also use the surprisingly fairly recent addition of charging protection to limit it to 80% charge)

I'm aware this won't work for all use cases, but it's great for mine.