Dedicated standalone computer for learning to code

I’m playing with the idea of building a dedicated computer for learning to code.
Once started, the computer will boot automatically in under 3 seconds in a coding environment (similar to microcomputers from the 80’s).

See the following pictures for a 3D mockup, a paper based implementation and a 3D printed version (under development):

What’s your opinion about this?
Would you like to book into JavaScript or Python?