Use an application (like OneNote) as a background image

I have a list of tasks I need to do. In order not to forget them, I would like to put them in a OneNote document. (Or whatever program: MS-Word, MS-Excel, Notepad++, …)

Then, I would like to use this document as my Windows background, so every time I start up my PC or I minimise all windows, the first thing I see is my list of tasks to do.

Is this even possible? If yes, can somebody give me an idea on how to configure this?

Thanks in advance