Packing a dedicated airway may be inadvisable, suggesting to untrained people that they give it a try, and an opportunity for liability.

But you could pack a scalpel and you could chose other pieces with an eye toward their being used as field expedient airways. The old-style Bic pens were handy for this. Unscrew the pen-tip and the plug on the other end and you have a tube that is a handy size for the job. The Uniball Gel Grip pen is similarly configured.

This might give you a last-chance device if it comes down to it without anyone drawing the conclusion that your advocating anyone untrained try anything.

IMHO it is good practice to select equipment that is adaptable for multiple jobs. Both of these pens are also usable as a winding stick for a tourniquet if you lack anything better.

I don't know about the Uniball but I used to participate in demonstrations where a common Bic pen was gripped in a fist, backed with a handkerchief, and driven through a piece of half-inch plywood in a punching motion. Invariably the pen still wrote after this abuse.

Select the right writing tool and you open the window for lots of other uses.