Back when I was restoring art and antiques, finding ivory was very difficult because it's illegal, and the only difference between bone and ivory is that bone is free and not illegal.
Where do you get lumpy tiles? Well, of course, you don't. But I get a lot of toilets, and so you just dispatch a toilet with a hammer, and then you have lumpy tiles.
I was a dancer of no repute. But dance taught me a lot. You walk into a dance studio knowing you have to walk out with a dance. You improvise.
I decided to set out to prove that you could make a reasonable living building for the poor using recycled materials and only hiring unskilled labor.
Tile is going to the landfill by the metric ton. All we have to do it gather it up, glue it down to the floor and grout it. Then you have a tile floor, and not just any tile floor: it's a mosaic of your own choosing.
I had always suspected that one could build an entire house from what went into the landfill, and, sure enough, it's true.