Is a simple way to get the trash folder visible on the drive of your choice:

1.) download a PNG picture whatever you want
2.) copy this PNG into the root of DH0/DH1/DH2 etc
3.) open CLI
4.) type following command (on each drive you have...)
"rename <Filename>.png .recycled.info"
5.) now you have an icon for your trash folder

To place it on your desktop create a new panel, set transparency to 1 and then add the icon of your trash to this panel. thats all