Well, for me, a tipi is one idea for affordable, portable and easy to make housing. This has always been a dream of mine, since my days of building forts from grape vines and fern boughs.
I come from a culture and a time in which people often built their own houses. When I was a child, I would spend weekends playing with cousins while our parents repaired or built new houses for some family member. I love the idea that somebody would need a new roof and all my uncles and aunts would show up for a day of climbing, hammering, swearing and drinking. By the end of the day, the job would, more or less, be finished.