Easiest and cheapest way to make your bike lighter and toughen it up; leave it outside, uncovered, and in the rain and snow. This will make your bike toughen up and shed some pounds at the same time. Weak bikes give up and die, but the ones who want to live will start right up and run stronger than ever.
Oh yeah, it also helps to leave half a tank of fuel in the tank and carb bowls. This will give it enough food to make it through 30 or so years. The stuff some folks call gunk is really like enamel for teeth, it protects it. Without that coating the bike becomes to sensitive, like some sissy #$%* and will rust and be weak.