I found this interesting (to me anyway) item; A torc with Mana Focus imbedded in it. I didn't know that could be imbedded.

You carefully inspect your silver alloy torc.
You determine that you could wear the torc around your neck. The torc appears to serve some purpose.

You gesture at a glyph-etched silver alloy torc.
You sense that the torc is a magic item that holds the spell "Mana Focus" with a few charges.

Magarven the Mad