Tents, Marquees etc. - Made using cloth of some sort maybe. And maybe unlocakble also.
Yurts - Again with cloth or maybe wood. like this: http://danny.oz.au/travel/1999/pakistan ... 7-yurt.jpg
and some pictures of other stuff here, might be of interest...



...basicly things which require less effort in what you need material/time wise to make them, but forfeit other advantages (locks, degrade length etc.) for that.

