I am getting ready to go on my first tour and have packed everything up and come to the realization that it would be nice to carry some stuff on top of my rack. Like food and my spare tubes and tools. I am only carrying a rear rack and panniers because all my camp stuff is pretty small and lightweight. I also have a jannd handlebar bag bug it just isn't big enough for all of that stuff. I was looking into seat bags but they seem too small and trunk bags strike me as very impractical. But I don't know much about this sort of thing so I am asking you guys. thanks in advance.