So we had a little freeze here the other week and for the first time I’ve experienced the regulator on my propane tank froze up and I couldn’t cook anything.  I looked online and got all kinds of things from using a blow torch or hair dryer to thaw it out which seems crazy since it’s propane.  I had some hand warmers laying around and taped them to the top and bottom of the regulator-within 20 minutes it was thawed out I could “pass gas” and cook some dinner.  Put some in your road kit for sure…