I take heavier square refrigerator magents and stick them insice altoids containers poke two holes in the top and make a loop from some old fly line. This is the fly box I use in the summer and I attach the hook on my laynard to the flyline loop the magnet will hold flies in place pretty well.. I have so many altoid fly boxes now... fly box refill foam works good or even the old mouse pads. I even bought a bunch of silver ones from a craft place which look rather classy
http://www.papermart.com/templates/65-1-70.htm...They fit in your shirt pocket and work great when you just want to get out and travel light.
Janus