I like ntfy.sh a lot. Sending a notification is a simple cURL request, and they have mobile apps. Also I gotta mention healthchecks.io for any cron job or uptime monitoring, which has ntfy.sh support built in.

There’s a game in Jackbox Party Pack 11 where you make sound effects: https://www.jackboxgames.com/games/hear-say

Is your user in the docker group? That group can run docker commands without sudo.