I built this workbench in mid 2020 (I wanted to say last year, but… it’s COVID time):
I really like how the retractable shelves came out. I’ve since installed deployable casters so I can move the bench around.
Since then, I built a portable cloud chamber (radiation detector/visualizer). Thanks to @Arjuna34 for the tips. Here it is with the side panel removed so you can see the interior:
And a better view of the action, showing alpha particles from a smoke detector ionizer and some background radiation:
