A web based app to add and check items off a list, which outputs a page that can be set up as a browser source in OBS.
Create your venv, we'll call it ".venv", and activate it.
pip install .
Of course, if you prefer to run you flask apps with something else, go for it.
Create a browser source, and point it to http://localhost:/list I've included "ListBackground.png" as an opaque background for your list, in OBS, but of course use whatever you like.