I have written a new desklet for creating icons on the desktop with which you can (un)mount devices. Hopefully some people will find it useful!

The code is on my wiki as usual: mounter desklet

Screenshot:
http://www.darkliquid.co.uk/media/projects/aDesklets/mounter-aDesklet-1.jpg

Features:
* You can set custom icons for mounted and unmounted devices
* Custom font, font colour
* Custom padding on the sides of the free space indicator
* Custom colour of the free space indicator bar
* Optionally Toggle mount/unmount status by clicking on the desklet (or right clicking)
* Optionally launch a filemanager by clicking on the desklet (or right clicking)
* Custom caption