Tyvek is labeled as "water resistant" and not "water proof", but I'd really love to know how much is the fabric resistant to water in practice. Some people built tarps or even tents out of it, but I ...
I have looked at offerings from MemoryMap and Anquet, but once you scale beyond a small area they become prohibitively expensive.
Have you used portable folding solar panels (5-20W) like Anker or GoalZero with much success? It seems like they would really only work well on a pack trip if you have a day off periodically to ...