Logitech Z906 speaker holders

When I bought the Logitech Z906, I really wanted to fix these speakers to my monitor. Having switched to a wall mounted ultrawide, I got kind of OCD about having nothing standing on my desk, and anyway these full range cone speakers have a way of focusing at higher frequencies, so it makes a lot of sense to have the speakers mounted at ear height.

This thing contains three different designs:
- a stick-on holder for the front left and right speakers to attach to the monitor via glue strips so it's completely reversible
- a rather massive center speaker holder that attaches to any wall-mounted 200x200 VESA mount from the rear of the monitor. I cannot guarantee it fits every monitor or monitor stand, but my monitor is an Alienware AW3420 and that has a pretty massive footprint and it's fine. The monitor attaches to the 100x100, and the 200x200 is used to attach the center speaker.
- a wall mounted solution for the rear satellites.

The Z906 satellites have a rear threaded insert w