Anyone have suggestions for a good lightweight air compressor (I'm thinking electric) to have on hand while RVing? Something you could use to air up the tires on truck and trailer, blow up the rubber raft, and blow out the computer, etc?? Also ... what is a good brand of the valve cap air pressure indicators that you can put on your tires? I was looking for 65 lb psi for the trailer, and it seems most are made for cars. I know it isn't as good as actually checking .... but more or less something to keep an eye on.