When I first met Carl Thompson, circa 1989 or 1990, he was working out of his apartment at the time. He was between shop spaces and had set up a makeshift shop in part of his kitchen (He wasn't doing much building then, mostly repairs - until Les Claypool brought him a lot of renewed attention and he reopened a shop in Brooklyn and started building again). Leaning in the corner of his kitchen/shop was the first bass he ever built. It was battered and scarred with assorted holes that had been drilled or chiseled out of the thing and then filled - sometimes with unmatched wood. He had been using that bass as a test bed for pickups, hardware, new ideas, etc... since he built it around 1972. He never thought of that first bass as much of a success; there was a lot about the design he improved upon later, but it served him well as a tool in his shop for many years.I save them in hopes that they will be useful, and have found it convenient to have them on hand. You never know what will crop up that an old body, neck, or stripped build will be useful for.
One idea is to make one a test instrument that can be used to test pickup positions, different electronics options, hardware, etc.
One of the more recent times I ran into him, I think he told me that he ended up cleaning up that bass and selling it to a Japanese collector for a boatload of money. Good on ya, Carl!