OK...now that that's out of the way.
The harddrive and the printer are on the top shelf. Phew, that was a lot of work, wiping all the dust away, and bundling the cords so they don't pose a choking hazard. Today I'll look into getting a strap for the desk to bolt it to the wall so it doesn't tip, and maybe get a grippy for the tower or something else to secure it to the shelf to prevent falling hazards. *sighs*
Now I gotta sort through all the junk that was on top. Eww.