Last weekend I visited the Shanghai Public Security Museum (上海公安博物馆). As a glass lover, one display I found to be of particular interest was their collection of drug paraphernalia which included some rather delicate lampworked pipes.
Given the illicit nature of their use, these are obviously not the kind of things you'd expect to find in regular museums or in books on contemporary Chinese glass, but, putting their use aside, the objects themselves look rather charming and are interesting in terms of technique and design. The quality of work ranges from fairly crude to quite sophisticated. As the pieces were behind glass I couldn't measure them, but I'd estimate the examples shown were about 3 -4 inches tall.
It's sad to see that crystal meth use is a problem even here in China with its strict anti-drug laws, but I felt these should be documented as they are the kind of items which are rarely seen and which could pose a puzzle if found in the future - especially if incomplete (as some below are).
While there's not much else glass-related in the collection, I can highly recommend the museum as entry is free

and they have a large amount of material on display over 5 floors (including one or two rather gruesome exhibits...).