One of the Chinese art forms we have seen here in Singapore as well as Shanghai is hand painted bottle art. It is available in many of the shops in China Town, and I am amazed by each piece that I have examined. Some are better crafted than others, but each of them undoubtedly created a trial of patience for the artist.
The bottles range in size but are usually no larger than four or five inches. The art scene range in complexity and detail, and are painted on the inside of the bottle (most likely using very fine, curved brushes). Typical scenes are dragons, birds, fish, or a landscape.
We recently acquired a piece (about 4 inches high) which we've added to our collection of mementos and items to dust.