I have a large collection myself ( house, utility buildings, toolboxes, and then there are the ones for work) so what I done was removed all keys that are house and car related and made about 7 more house entry keys, each car got its own seperate ring and a house entry key ( this is where its nice to have all your house door keys keyed alike) was added and a "Fob/Charm" that identified each car. As for other keys around the house were put on a seperate larger ring as well a sperete ring for work. As for the "Fob/Charm" choose one thats light in weight