Amazon has lighting-female to USB-C male adapters for $14.99 for a 3-pack. IPhone 15 users can just buy those and all of your lightning peripherals should continue to work.
I know. My comment was more toward all of us who keep all those old cables and such just in case. I think I still have one of those old four-prong rotary phone plugs around somewhere. I know I have some snap-in phone extension cords.