A4 VW spare tire options

I have no room for my full size spare in my new beetle. What are my options? Does the anyone have a doughnut sized spare tire? What about the reliability of can-o-spare spare tire spray? Run-flats in my range?

A doughnut would only save you an inch or two... What must you put in your trunk thats worth risking your safety on the side of the road?

propane tanks, battery, stuff, my car is noticably better handling without the weight of the spare in the back. I also learned that the spare is part of the rear crumple zone.