Wanted: VT5x roll-around stand

[Eric Smith]

I've been trying to find vendors who sell the parts to build stands
like that. Ideally I'd like the column height to be adjustable, but I
obviously can't come up with the right words for a search because I
can't find them even in fixed height.

I'd like to build one specifically for a DEC GT40 terminal, with a
keyboard tray.

Someone I know has a stand that is almost perfect for the GT40, but
there's no identifying information on it, so I can't easily search for
a matching stand.