We just have a plastic tub with the chargers and spare (pre-charged) batteries in it, on a shelf near an outlet. When a battery dies, or gets close, grab the tub, select appropriate new battery, swap battery, pull out the charger, charge. When charging is done. Disconnect charger, place in tub. If battery has cover, cover battery, place in tub. Done.

It's not fancy, or elegant, or anything, but it works. Everything is together and ready for use/storage.