Paul Elkins Shelter Made of Old Campaign Signs etc.

Paul Elkins is an ingenious inventor and tinkerer who outdid himself in this design.

There is also this attractive design which is great if you can find the Coroplast to build it out of.  I checked around here and it's almost impossible to get at a decent price.

The campaign signs in the first video are usually made of the same stuff and the week after a major election you could probably get tons of them for free.  Of course, it might not all have the candidates of your choice on it. Maybe you could put those on the bottom so people don't get the wrong idea.

One good thing is that both of these are light enough so you could put them on wheels and move them around as you like.  Though neither of them are a house,  they are a good alternative if a house isn't possible.