Most useful? The solid steel valve-stem extenders that kept Ed from turning into a raving maniac every time he had to check tire pressure (he's normally very calm and sweet!) Second runner-up: a laser digital thermometer gun-thingie. Super handy for all kinds of stuff, including checking tire heat, bearings, heat leaks, fridge temps, etc
Least useful? Probably the freestanding water filter - I guess we didn't stay in that many RV parks where it was truly needed? Second runner-up: we seldom stay in the same place for more than a couple of days, so a sewer hose support was just wasting space.
