Print case yourself
Download the Taby case files from Drive. Pick the no-battery or battery folder, then print the top, bottom, and mount parts you need.
What is inside
No battery case
Top, bottom, side mount, top mount
20 x 10 x 2 mm N45 neodymium magnet, 2.1 kg pull
Battery case
Battery top, battery bottom, side mount, top mount
Needs a 20 x 10 x 5 mm N42 neodymium magnet, 3.8 kg pull
Needs an 802530 battery with a 1.25 mm plug