Lid for upsidedown salt and pepper grinders, in Danish.

I bought a discount set of salt'n'pepper-grinders, a lid was missing ...
What to do :-)
Magnet used, in the center, was a 1500g ø8x4mm neodymium, from a slotcar.
I have polished it, after pictures were taken, with 600p and 1200p emerypapers.