Yes! I had an idea that was inspired by Deoxal. I want to build a calculator with a Raspberry Pi Zero W on Linux which can emulate a ROM image of a CE. So far, the entire thing is projected to only cost 50 dollars. Of course, everybody needs a CE in order to get the ROM image. Since CEemu can run on Linux and has custom GUI capabilities, I am writing a software (called LaplaceOS) that can run different calculator ROMs, directly from the calculator! I intend to place the code on GitHub, and it should be ready before December ends, but it may be ready as soon as November as soon as I figure out a few things. The software can also run custom programs outside of emulations, which includes CAS programs. Code should be available for doing everything from finding surface integrals to graphing animations, and thus it should make for a very powerful calculator. But there are a few problems. I need to figure out how to get a Pi to disable the mouse, disable the keyboard, enable inputs for a custom keyboard, and only display the output display menu on the screen (conveniently programmed as a separate window similar to CEmu. I will freely distribute the LaplaceOS software, but ROM images are illegal so everyone must find them on their own. I will include a guidebook on the parameters for external programming and building specifications as well, but this may well roll into December unless I can get some suggestions on how to fix these problems. I know this is a bit of an OP custom calc, but I think it would partially revitalise the community if enough people were to work with the OS. A desktop version of LaplaceOS will be available as well for experimentation and testing.