The only actual key I carry now is the mailbox key for our neighborhood cluster boxes. The house has keypads, and if it didn't I'd install them like I did for my parents' house. Way better. Can set up extra codes for friends, guests, housesitters, etc and just delete them when done.I feel so old school. I have keys for my house, mailbox, and fobs for my other cars and the security system.
I do carry nail clippers on my small key ring too. Come in really handy.