Casserole Lid Holder for desiccant

I was looking for a simple solution for my LACK table project...
I came up with the idea of packing the dry beads with indicator into the lid of a casserole dish and fitting them in the LACK table lid.
All you have to do is put the lid of the casserole dish in the oven to dry the silica gel.
So no cumbersome transfer of silica gel before or after ;)

Designed for M3 threaded rods
Drilling on M4 thread (with 4 mm) is also possible.

You'll additional need:
6 x threaded rods M3 (or M4)
1