Keys would be my addition to the RR lanyard. I get separated from my primary set of keys more often than I like to admit. The spares keys on my lanyard have saved me more than once.

This is not a modified RR necklass, but my less comprehensive EDC lanyard.

This is version 14 or 15 by now, but this one has lasted for over a year. It stays flat against me while I wear it and it doesn't rattle when I move.

Inside the Blast-inspired shrink-tube breakaway is tinder and SAK size tweezers. I seem to get more than my share of slivers.