So here's why I bought a receipt printer:
Every time one of my GitHub repos gets a new issue, I now get a physical ticket printed out on my desk
Every time one of my GitHub repos gets a new issue, I now get a physical ticket printed out on my desk

Spiced it up a bit with an appropriate @wesbos sticker
For anyone interested, I'm planning on doing a write-up this weekend of how I got this working. Short story is that the printer is hooked up to a RPi Zero W via USB and running a local PHP server (yes, PHP!), which then sends raw ESC/POS commands to the printer.
And here it is! A full walk-through of how I got this printer set up and printing with GitHub webhooks, PHP, ngrok, and a Raspberry Pi. https://aschmelyun.com/blog/i-built-a-receipt-printer-for-github-issues/