I do remember relying heavily on the structural properties of beams of celery, back when ‘The Loft’ was the all-you-can-eat salad bar in that particular university town. There was the downside that the pyramid needed to be dismantled in the same order that it was erected, so you couldn’t bite into the pasta salad or the pickled beetroot on whim, they had to wait their turn.
The same establishment also offered a Bottomless Coffee Cup. The title of Iron-Bladder was hotly contested among the cognoscenti.