lighter, button compass, fox whistle, two important keys, photon light, and a knife.   
The lanyard is three pieces of braided paracord.  The items are spread so they don't clank when I move and tied on so they stay flat against me.  It took a few versions before I got it to work for me.     I have been using my latest version for about a year.
I normally wear golf shirts and have no problem with it being uncomfortable or cumbersome.    I use all of the components, except the whistle, fairly regularly with out it being inconvenient.
Gary 
Gary.  May you post a picture?  I was thinking of buying a neck pounch to carry some EDC (as it would be handy for my employment)