|'Documents' folder icon in desktop of LXDE Lubuntu|
Open terminal from Main menu or pressing "Alt+Ctrl+t". Run the command below. No need to use 'sudo'.
cd Desktop ln -s ~/ DocumentsPress Enter. A 'Documents' folder shortcut icon/ launcher has been created in your LXDE desktop.
In this way you can create 'Desktop' 'Downloads' 'Music' 'Video' folder shortcut icon on any LXDE desktop.
To know 'How to create 'Home' and 'Trash' shortcut icon/ launcher in any LXDE based operating systems desktop, please read "Home Documents Desktop Icon on Lubuntu LXDE".
If you quite more curious then you may read this page titled "Adding Applications, Internet Links to the Desktop, .Desktop Files, On The Path".
To explore the world of LXDE you may visit the greate Distrowatch.