This is a mount designed to hold a Weber Workshops blind shaker for the DF64 Gen 1 and 2 coffee grinder. It has a slot for a small magnet in the base that centers the shaker directly below the grounds chute. In the photos of mine, I made the cover disk out of wood, but I have also included a printable cover of the same dimensions.
While any magnet of a similar size should work, here is a link to the magnet I used: https://www.acehardware.com/departments/tools/hand-tools/magnets/2102259
The author remixed this model.
I modified the base to accept a magnet that works with he blind shaker's magnet, and added a flat disc cover that can me made of wood, or printed.