Wooden Bowl
Bottom Cut Out
Stainless Steel Bowl, Filled With Lead
Centre from Scotch Tape
Hard Disk from PC.
Cheap Pin Vise from Ebay

I don’t think the captions from Ganoksin Project user Shaun750’s video, embedded above, showing off his clever kitbashed engraver’s vise, are meant to be appreciated as blank verse. But it’s working for me. [Thanks, Jason!]