Join Date: May 2013
Location: Port Stanley area, Ontario Canada
I have my bike keys on their own ring, car and house keys on another ring, work keys on another, and finally trailer keys on final ring. They I have a small carabiner to hold them all together. I take a ring off for what I need, or leave some at home. I.E. my bike keys stay at home 'cause it's parked for the winter.
When I do ride, just the bike keys are in the ignition. The house keys (and maybe work keys if I'm commuting) are on the carabiner clipped to my laptop case in the pannier. Then, when I'm at the office, the bike and house keys stay clipped to the bag, and I just have to carry around my office keys all day as I go from building to building.
When they are all together, it's a big gangly collection of keys. But I rarely carry them all together like that. And I know the carabiner will not allow any ring to fall off by accident... This technique is great when someone gives you another key temporarily, or you have rental/borrowed car... just add to the collection and quickly remove later.