I found this little trick the other day, if you need to write something down and don’t feel like opening or creating a document you can open a new tab in your browser and type this in the address bar. Works in most modern browsers.
data:text/html, <html contenteditable>This will give you a blank page and you can start typing. If you click ctrl + s or cmd + S (Mac) you can save it as a text file on your computer.
Source: Lifehacker