Rapidobe is an extremely fast and cheap method of building. It involves putting posts into the ground, attaching a U-shaped bag to them and filling it with any earth available.
There are occasions when a temporary wall is necessary. For this purpose there is little simpler than OSB or plywood with a vinyl tarp stapled to it.
A bottle wall is not only an excellent use of old glass bottles, it is also very pleasing to the eye. It lets in a little light, and is most beautiful at sunrise and sunset.
Stud walls are quick and useful for interior walls between two rooms or for ceilings. They are not particularly strong or soundproof, but they are functional.
Brick is easy to work with once you get the hang of it, and fairly fast. You can use adobe, CEB, cinderblock or any other type of block. The principal is the same.
It is inefficient to recycle glass, as it uses so much energy. However, reusing it is practical. Glass is easy to sterilize and has many different uses.