OK, you might think I'm crazy, but look: I like watching movies (on my computer) (and TV series). I also have some low importance stuff I have to write up sometimes. We all know that sometimes movies get boring for a few minutes... or dozens of seconds.
I want to write a bit while that happens. My best guess would be an application that has keyboard focus even when minimized, or a full screen invisible app. That way, I just type when I feel like it, and nothing appears on the screen... I just have to type things right. When I want control back, there could be a special key or something.
Is there anything approaching the concept? Or do I have to set Notepad++ on 0% opacity, black text, and hide it outside the letterbox (with VLC on Direct3D desktop mode, ofc)?