Windows "Send to" is useful when you want to quickly copy a file or open it with an application. Here it is how to easily add your own app or folder to the "Send to" menu.
Press Win+R and paste the following text in the box
This will open the folder of the "Send to" shortcuts. Create a shortcut for the app or folder and you are ready to go. You can even add a shortcut to the "Send to" folder so that you don't have to do the whole procedure every time!