Right after receiving your magnets I built a fixture for spray painting small iron fittings, which works great.
These fixtures each consist of a simple wood strip, in which I drilled holes of 5 mm diameter and 9,5 mm depth.
In each of those drill holes I inserted a S-05-10-N
Then I covered the entire magnetic strip with a transparent adhesive tape.
I used a total of 100 magnets.