I'm assuming the Unity bar is the bar located on the left hand side of the screen.
Is it possible to move those icons to the desktop, like a shortcut?
I'd like mainly all external device icons, like USB and external drives to be moved, if possible.
Can this be done?
You should be able to use
gsettings set org.gnome.nautilus.desktop volumes-visible true
to get all the mounted volumes on your desktop.
Alternatively, you can install dconf tools with
sudo apt-get install dconf-tools
and navigate to org > nautilus > desktop. Then change
volumes-visible
to checked.If you'd like to remove the icons from your launcher now that you have them on your desktop, you can install CompizConfig-Settings Manager (CCSM) and change the "Show Devices" option in the "Experimental" tab under "Unity".