Are there any nice cross-platform ways to trigger a notification from a terminal?
I've been using https://pushover.net/ but you need to use a browser and it's noticeably slower than the native options.
(Pushover is great for mobile notifications though.)
I'm really impressed by the styling options in https://carbon.now.sh for producing images of code.
I'm often dissatisfied with my options for displaying code samples in slides, this might be a better option. Line numbers and (light background) syntax highlighting matter.