Here's an idea. Picture a lounge/bar setting with dozens of movable seats and tables. But these seats and tables are special because they are identical and totally interchangeable with one another.
I did some prototyping and the height I've used here is 24" (or what I considered to be a lower counter seat height). This is so that it can serve as a table height you'd be comfortable resting a drink at — but also as a seat height that's not too tall (to artificially lower the seat height to something more like 18" I've added a foot rail). Lastly the diameter is extra large to accommodate the functions of a table. How do you think this concept could work in practice. Potential?