Hey Michael- sorry for the delay, I just saw this.
Here are the magnets I used:
The only other things required were some flat head screws, locknuts and washers to mount the magnets to the factory license plate holder (I think they were size M6 from Lowes) ; some JB Weld Plastic Epoxy to mount the other magnets inside the bumper cover. The rubber furniture pads you should be able to get anywhere.
Really, not much to it!
Best,
Milt