Hi Coj
Doug's suggestion is exactly what I did about three months ago. It works a treat.
I used some thick black matte cardboard 1 metre X 1 metre and scored the back where I wanted corners and ran sticky-backed velcro down the sides and tops of the monitor and the same on the cardboard.
Now I just have to figure out how to stop my cat from standing in front of the monitor for long periods when he feels he is being ignored
Oh yeah! The price was perfect.
Paris