Goedjn writes:
For cheap strong temporary try thick corregated cardboard, like
referigerator boxes.

For temporary, like a day or two, maybe. For anything longer
than that, or for any time in which you have guests, choose
a material that isn't QUITE so eager to go up in flames.

Or laughter... if you want to live in a cardboard box, you might as
well just move outside and join the ranks of the homeless