My exhibit in the 2018 NYCR Interactive Art show was a scrolling signboard built with near-UV LEDs and a loop of glow in the dark tape pulled by some scrap motors. The font is the same as the MTA Countdown Clock.
Instead of making a proper PCB, I noticed that the surface mount LEDs spanned 0.1" perf board holes and wired them all annode to cathode and blobbed solder from adjacent holes to connect to a header pin. 17 GPIO pins from a Teensy 3 provided the drive at 1/16 scan rate. The motor ran off the USB +5v at whatever speed it was going to run at.