I've been a hobbyist photographer since the mid 1990's. I've taken long breaks from this hobby and I've never considered myself as incredibly good at it, but I still like it. Latterly I've taken interest in the more technical side of photography and as I needed something to take pictures of very small items, I looked into super macro photography. I had no idea that people were using microscope objectives for taking macro pictures and as it turns out, it's not incredibly expensive to get started either.
So I bought a few cheap microscope objectives, a Canon EF lens adapter and some PVC drain pipe. I cut the pipe to length, lined it with an anti-reflective velvet flocking and made adapter pieces for both ends on the lathe. As a finishing touch I wrapped the pipe in some self-adhesive vinyl. Sure it's not the best piece of optics out there but I was pleasantly surprised with the image quality. The only real complaint is the extremely thin DOF, which makes focusing very finicky and time consuming. See the resulting pictures here.