Has anyone tried making their own make-shift Hydrapack? Over the years of trekking I have never owned a Hydrapack. So, before investing on something, and for some fun-n-learn part of it, I would like to make myself a Hydrapack. What are the basic things that I need, and how to go about it? I first had a thought of making it out of Blood-bags or Urine bags that are used in hospitals.
I have always tried to make things for fun. Like I made my own Headlamp using power LEDs and a cheap circuit, which honestly works as good as a Petzl lamp. That urge to use make-my-own-gear products really has made me understand the product more and repair/make-shift them in case of emergencies. I have made a swiss-knife out of something as well, that's the point: Fun-n-make.