How to view any folder as if it was desktop
From this SO answer:


  Backup your old default Desktop folder
  
  If you have files in your existing Desktop folder, don’t worry. We’re
  going to back up your existing folder so you can copy your old Desktop
  files to your new DropBox Desktop folder afterwards.
  
  Simply open a terminal and enter the following command.

sudo mv desktop desktop.bak

  
  Create a symbolic link to your new DropBox Desktop folder
  
  The long and short is that we’re telling OSX to create a link to the
  Desktop folder in your DropBox, but to treat the link as if it were
  the default Desktop folder itself. In this way, when you save things
  to your Mac Desktop, they’ll appear on your Desktop as before, but
  actually be stored in your new DropBox folder. Here’s how to do it…

ln -s /Users/your-user-name/Dropbox/Desktop/ ./Desktop

  
  This worked perfectly for me. 
  
  Credit goes to
  https://ifyouwillit.com/life/auto-sync-your-mac-desktop-folder-with-dropbox/


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