In my long, storied career as a legal aid lawyer, I have had a number of clients become homeless and move under the freeway. As I understand it, a plane is much more preferable than a soggy sleeping bag under a leaky tarp, with only the traffic noise to lull you to sleep.
In Yakima, where a lot of seasonal produce pickers work, there was a project several years ago to use empty shipping containers for living quarters. It worked out well. If there was a way to get some empty planes from the desert, I would do it. We could even stack a few of them on top of each other to save space.