I designed this magnetic clasp to originally work for the LACK enclosure compilation by Woody1978 although I suppose it could be used on anything really

Using standard ~2mm plexiglass and M3x8mm socket cap screws the two halves perfectly clamp onto the material, with a recess for the 10mm magnet to fit inside. All parts have hex-recesses for the nuts as well

I wanted to make the most use of the space for the handle, so I designed an outer part with an attachment point for the handle as well

Enjoy!