More workbench mods....

Used some of these t-nuts....

...that I salvaged from the old desk I recycled for the workbench top.  I drilled the mounting hole and used the bolt to draw the t-nut....​

....tight into the underside of the bench-top.  Now I have a way to temporarily secure my vise and drill press.  Mounting bolts go through the top of the desk and hold nice and tight in the t-nuts:

The vice sits on the front corner and can be rotated to face any direction

These will come in handy at some point I'm sure.