I'm one of those people who have tons of little bits of paper notes on my desk and I decided I wanted to try some Sticky Notes. Not the paper ones but digital, on my computer. I believe Windows 7 had a sticky note utility built in, Vista had it has a gadget, Windows 10 requires a Windows Store download. I decided to look elsewhere.
And this is where I ended up: www.simplestickynotes.com
I downloaded and installed. No bundled anything to worry about. And I got my sticky notes.
When you open a note you will see a three-dot menu, by the X. Click on this for more options.
You can change the colour, opacity (make it transparent), change the size and so on. Notice the Delete Note option on the bottom menu. If you just click on the X, the note closes but is not deleted. Clicking on the icon in the system or notification area (down by the clock) will open your notes again or double-click to create a new one.
Right-clicking on the note or highlighting the text and right-clicking on it will give you some formatting options.
If you delete a note you get an option to undo, so either undo or x it out.
This program sets up to start up automatically with Windows so you shouldn't loose your notes if you restart your system.