Before I left for the evening on NYE, I removed my building and apartment keys from the large keychain I generally carry and put them on a small ring to minimize bulk. Â With the restaurant, nightclub, multiple cab rides, and shallow-pocketed slacks, you can guess what happened next. Â Not a great way to welcome 2005. Â Everything worked out in the end (fortunately, a locksmith was available on New Year's Day to let me into my apartment), but I was wondering if any of you had any suggestions on how to carry keys (particularly for an evening out) that will minimize the chances of losing them while maintaining a slim profile. Â Thanks in advance.