I'm looking for a good way of attaching an ACR Signal Whistle to other gear.

The lanyard/keyring hole provided for this to be accomplished is very narrow, straight, and a bit long (traversing the whistle through its width). Nothing I have except for a bit of aircraft cable will fit through it, and I don't like the way the cable is working with it.

Any suggestions or recommendations would be appreciated. I am flummoxed (for the moment, anyway).

-- Craig