I've been hacking on the old XY plotter Matt Shepard built ages ago thats been in storage upstairs.
I'm gonna turn it into a window display that draws using a uv laser on glow in the dark paint via a webapp from a QR code.
I love the idea though of anyone hacking on this and if you beat me to modifying it into something else thats fine by me :P (I will be coming in today to swap out the control board though at some point)
Evolving write up with images here:
https://heatsynclabs.io/u/moheeb/project/xy-plotter