It would not, because the solar strip offers less power than the device consumes—by a lot. The cell would not really ever charge. You'd need a solar strip that'

It would not, because the solar strip offers less power than the device consumes—by a lot. The cell would not really ever charge. You'd need a solar strip that's pretty darn large (by my rough math, 1-2 index cards in area, at least). At that point, how is it a useful form factor? And again, that's assuming the best possible lighting, which is not the case for either a light switch or an air tag. I suppose you could use a little solar strip to make a button battery last longer? But you're talking about a difference of like 100 days of life versus 102 days of life.