Maybe your intentions are wrong. Some people build things simply for the joy of building it. In each idea you've discussed, you could easily carve out a speci

Maybe your intentions are wrong. Some people build things simply for the joy of building it. In each idea you've discussed, you could easily carve out a special niche version you need for yourself. If your goal is to make money from said project, well that is a different thing altogether. I personally suggest you abandon punching keys into a keyboard and get into something like hardware-hacking.