Hi again,
inspired by @flaterectomy's post I thought I should maybe show you something I use for warmup: adventofcode, an advent calender full of coding exercises :-)
Actually, it's a bit late this year since LD40 starts at december 1st, but by tinkering with the URL you can still access the calenders of the last years.
The fun about adventofcode is that there is no language stated, you only get some input lines and a question like "what is the phone number that santa has been looking for?" or so and an input field to enter your answer. The focus is on the result, not on your way to get there.
I've been using it to learn new programming languages, because I find it easier to learn such things if I have a precise goal.
Since the Godot engine allows you to execute godot scripts from the terminal by executing
godot -s script.gd
, I'm using the exercises to get comfortable with the GDscript language. But even if your engine doesn't support that, you could still build some primitive game window with an in-game-label or textfield to show you the answer.