The Tulip Creative Computer[1][2] hits most of your points (I'm just a customer). It is definitely not a retro computer. It uses modern technology (ESP32S3 mic

The Tulip Creative Computer[1][2] hits most of your points (I'm just a customer). It is definitely not a retro computer. It uses modern technology (ESP32S3 microcontroller with megabytes of flash memory and RAM, USB ports, wifi, color touch screen etc.) and runs a modern programming language (MicroPython) that also serves as the operating system. This particular product might not be exactly what you want, but it shows that you can use these technologies to build a computer that is much simpler and more malleable than a modern PC in both hardware and software, but is still very capable, and intriguing to use. 1. https://github.com/shorepine/tulipcc https://github.com/shorepine/tulipcc 2. https://news.ycombinator.com/item?id=41122986 https://news.ycombinator.com/item?id=41122986