Plumbing Repair Kit to Carry With you. Just in Case...

Shark bit fittings and PEX pipe. Look at your rig to get correct size. Get couplings and caps.

I carry about 2 feet of PEX tubing and a couple of Shark-Bite fittings, but as usual, I never seem to have exactly what I need when I need it.

I, most often, end up running down to the nearest hardware outfit unless I am camping on the moon.