Long thought of as target practice for tornadoes and most other major natural disasters, trailer parks and mobile homes are the stepchild of the housing industry.

But small, modular prefabs might have a few things going for them: They are usually cheap and might be more sustainable than other dwellings.

For around $60,000, you can get a posh-looking home from Ecospace. The company uses modern architects to put up studios, using green construction methods, in just five days.

Note: The "sustainable" tag doesn't extend to the 25 hounds that live in the backyard and protect your collection of rusting bathroom fixtures.