[bobcowan]

Plenty of good scissors jacks available at parts stores and bone yards. They are stock equipment in lots of vehicles, don't weigh much, don't take up much room, and only need a couple of inches of room. You can usually get one from a bone yard out of a small japanese vehicle for about $10, including the handle.

Get a good plug kit from a motorcycle supply store. That will give a good roadside repair that will last a long time. That along with a small 12v air compressor will repair most small punctures and have you back on the road in no time.

For the air compressor, I bought a Campbell-Hausfield from Wally-World, and took it apart. I threw away everything that didn't look like an air compressor, and it became a very small package.

Somewhere along the line I picked up a pair of folding wheel chocks that I carry around.