Staedtler's Noris Digital Jumbo Stylus has a fabulous feel, better than the EMR stylus from reMarkable, and a fraction of the price, but lacking that magnetic attachment.
This model slips onto the stylus and holds a number of magnets allowing you to snap onto the side of the reMarkable tablet.
In this remix the magnetic attachment is improved (strengthened) and the magnets are captive once the stylus is in place. You'll need nine neodymium bar magnets, 5mm long, 3mm wide and 1mm thick with North/South poles on flat faces. These were pressed in, as a stack of 3, with the South Pole facing out nearest the eraser, followed by two North Poles facing out.
Fitting to the stylus was still an easy push up the length.
Printing flat, on the magnetic attachment surface, doesn't need support. In these PETG examples, I didn't follow my recommend rotating this surface away from the bed by 30-45 degrees to strengthen the printed model - I'll see how the PETG hoops compare for strength to the previous PLA version.
The author remixed this model.