I use one of those split key rings that separate with the push of a button.
Just counted, Personal side: 9 keys & Lock FOB, (Total 10) truck, car, office, apartment, garage,toolbox,safe, 2nd residence, etc.
Work side: 8 Keys, Mobile office, Main door, side doors, toolboxes, toolroom, etc.
(I also have probably 25-30 keys from various jobs, Company vehicles, etc. in the console of my truck, needed rarely, so I don't keep them on me all the time!)
I keep the work keys in one pocket & Personal keys in another.
No wonder I have back trouble!