A major attention-grabber at last week’s Outdoor Retailer Summer Market (ORSM) was the BioLite CampStove, a unique biomass-burning stove that will boil water and charge your electronics via USB. The CampStove was featured by many of the most popular online media outlets, including Outside, GearJunkie, and TrailSpace; Brian Green has also written about it a few times.
This is the best way to get a fire going inside or out! Before I started using fatwood I would wad up a bunch of crumpled newspaper into the wood stove, and then hunt around the property for twigs and sticks and fallen branches, which then had to be dried out most of the time.
I believe that another reason why copper is used in collectors is sanitation. Copper is naturally bacteriacidal. So, no bacteria growth in the collector, lines, etc etc. Plus, copper is a proven container for the safe storage of potable water, even when repeatedly heated and cooled.