In the episode Polymorph, as Lister is serving dinner with all re-purposed medical equipment, he pulls out some red wine in a clear glass vessel that was sitting on its side. The audience members are all grossed out, so I'm wondering if it has a specific purpose I'm missing, probably medical/body fluid related?
It's hard to tell, unless you are familiar with older hospital equipment, but it's an older style hospital urinal. It's not on screen much, but here's a grab where you can see the rough shape:
And, here, you can note how it rests on the table, without spilling it's contents
A quick image google will show you a number of styles, but it's basically like this one:
I don't have enough reputation to comment on the above answer, but wished to provide a more accurate response.
This is a glass urine bottle for use by bed-bound patients.
For guys of a certain age, this brings back memories of embarrassment, the thought of spillages in bed, and of it being thrust upon you by stern looking matrons.
