Ok, yeah, a student workstation, but................

I want to find plans/examples/etc. of mobile practice stations but searching on "student workstation" isn't getting me very far. Are there other names for those things?

I saw one on YouTube one time that a Japanese instructor was using that I really liked but can't find that one again.

I was thinking something with drill stem for a center post, a round piece of 1/2" or greater plate for the "desk" part and a heavy base of some type with castors.

I can imagine what I'm looking for in my mind but too new to know what types and sizes of pipe/plate/etc. to make it work; ergo the search for plans/photos.

Any suggestions?