Double ended key rings. Keep your everyday keys on one end and easily add and take off others just for the days you need them. Handmade from veg tanned leather with nickel plated screws and burnished edges.
Do you have keys for the houses of other members of your family? Do you carry all the keys in your life around on one keyring? Do you feel like a jailor walking around with a massive (and heavy) bunch of keys? Unburden your pockets/handbag! Put the keys you use everyday on one end and then easily and temporarily add the other keys you will need just for that day.