I've been playing with retro-styled interfaces terminal lately. The unicode box and block drawing characters are wonderful for this, especially "symbols for legacy computing" . These include characters from classic computers of the twentieth century, and the block-diagonal teletext characters.
These can be combined with ANSI escape codes for styled and colored text. Which all led me to ask: How hard would it be to support these features on an Arduino terminal display? This question led me down a rabbit-hole of vt100 terminal emulators on the Arduino.