Disclaimer: I write down my business ideas that I can implement in a day or in the worst case less than a week. The principle is to figure out something simple but still useful. I may do or not do them in the future but I write them down to offload them from my head to make space for other ideas.
Idea: minimal todo app with re-occurring events.
Hire: someone who does not need all the fancy functionality.
Indirect Competitors: not aplicable
Why I think I can do it fast: it is really simple app