One time I created a very simple Node.js hosting service while in between contracts. Got some signups but not a lot. I did continue to operate it for several

One time I created a very simple Node.js hosting service while in between contracts. Got some signups but not a lot. I did continue to operate it for several months while doing other contracts. It's succeeded as far as the goals which were just to have a few paying customers for a system that did not take a lot of research to set up. In one case, several years ago I started working on a Docker orchestration startup after one job ended and worked only on that startup for about 7-10 months (don't remember). I ended up stopping because by the time my MVP was more-or-less ready, Kubernetes was released and already extremely popular and I would be competing with Google and Amazon. I had an interesting system but it would not have been popular because it did not involve K8s. So when I ran out of savings and had to take a full-time contract I decided not to try to continue on the weekends. Another time I spent over a year working weekends to build out this thing I called Vintage Simulator which basically embeds emulator screens in a Lua-scriptable 3D environment. I did dream about that becoming a business, but I was not necessarily expecting that. I was however hoping that vintage computer collectors or Lua programmers would be interested. I did not see a significant amount of interest though or any real evidence of serious users besides about two people. I still feel like there is potential if I keep pushing in that direction especially by developing marketing and content, but it's just not something I want to dedicate so much time to anymore. My current fantasy which is occupying about 3-4 days of the week while I have a part-time contract is about computer vision and (down-the-line) robotics. It's possible I may have some financial crisis if I need to switch to a full-time job and end up abandoning it. But if that happens it's still highly motivating for training myself in machine learning and related fields. We will see. I have registered a company called General Biomimetics and imagine utilizing advanced 3d printing to create very lifelike robots. It is very good motivation. https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcRyCfDuvWFCySQ4TBiX5bLtZO8aE4w30sJHSA&usqp=CAU https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcRyCfDu... So far I would say the only effort that actually turned into a real business (did not make a significant amount of money, but still made more than expenses) was the very simplistic Node.js hosting thing which I launched within a month of starting to build it out.