Some humanoids just don't get it. Thats usually gives a reason to demonstrate some achivement in military equipment research and begin the lecture. However, for consistency sake, these humanoids have to live somewhere before (if not after) the explanation of why its better to have a level instead of hit die. That's where Orc Village catalog comes in. Dirty huts and hovels, quickly patched with animal skins or just stray piece of junk. If you been in one you have been in them all.
Notes: The diversified set of decorative elements include scull piles (yes!), animal skins and roof patches. If you are mapping a horde on the move, lighter tents are available in other catalogs.