I used to carry a lot more on my work keys, now I've streamlined it. I just have a spring hook to hook it to a belt loop, master key for our campus, key for my cubicle drawers and cabinets (Used to be several but they rekeyed them so all of them take one key.) Key to our mobile IT carts, key for out outdoor electrical points, key for our outdoor network ports, my fob for our key-less entry system, my PayPal "football" (I don't know why it wound up on my work keys but it's been there for years), a Gerber Curve and a second key-ring with a master for one of our regional offices.