I'm thinking that what would work for b0rsuk is a device that would let you program in a reasonably high level language, c, python, etc. and had a display, and ran on batteries. Android would fit that bill and I gave it a try but I found it's API to be botched. (Some web sites mentioned Lua and C# but I don't know if they're using the same botched Android API.) Maybe back to the Pi Zero W and a Waveshare display but with a nice enclosure that protected things.
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