You're all going way OTT. All you need to do is disassemble the power bar, drill 2 holes in the back, screw 2 screws into the back of the desk and hook it over. That's how you would normally fix a power bar if it had the holes in the first place. It's also easily removable.
Alternatively there's always our old friend Mr. Glue.
Alternatively there's always our old friend Mr. Glue.




