I have a dozen or so AA (at least 10? 15? years old) and four AAA. They hold a charge very well, and are easy to charge from a solar panel when needed. They’ll top up a phone during a blackout or a camping trip. They get used in flashlights, controllers, remotes, shavers, etc.
I keep a box of alkaline batteries in various sizes on hand for guests, but it’s hard to beat NiMH and NiCad rechargeables.