61
Rechargeable AA and AAA batteries
Why here. By this point the household runs several battery devices routinely. Disposables stop making financial sense somewhere around here.
“You said buy disposables at item 3. Which is it?”
Both, in that order. Disposables need no infrastructure and hold charge for years, which is why they come first. Rechargeables need a charger and a habit, which is why they come after the household has a reason to run one. Keep the disposables as the reserve that needs nothing.