I end up with B sometimes because I use iPhone double-space to get a period and accidentally triple space but I miss the third and hit B. Maybe V is the same.
When I read "lovely graphics" I was expecting visualizations or images. I was curious so I scrolled through your screenshots and I didn't see any, just a lot of text screens. By graphics did you mean GUI text formatting?
I guess I'm mainly just talking about typography, nice interactions and movements, designed layout of information, rather than pictures. But it is interesting at this point to start thinking about what could be shown graphically.
The original ones came with a USB C Y cable that allowed you to connect to the computer but get power from an alternate USB source. They also have beards on the board for DC power.