I used to carry all the key ring stuff on one ring but when the new car came with the giant fob which has to be slid into the dash I had to separate it all into two rings to keep from damaging the car's dashboard.

What's funny is when I'm just roaming around the house on the weekend I never remember to put a kife or light in my pocket. I end up leaving knives, lights and tools all over the house just to save me from walking up or down the stairs. Pretty silly.