I noticed that my university has a glass blowing service in the same building as the chemistry precinct, supposedly to make the glassware for the chemistry labs. At first I thought this was kind of quirky and I chortled to myself, "man, the chemistry students must break a lot of beakers."
Later I toured a campus overseas and noticed that they too had a glass blower. A quick Google search showed that many institutions have similar facilities. Most of them sell their services too. It seems to be more academically-focused than I first thought; it would be incorrect to equate it with the janitorial service or the on-campus bakery, presumably.
Why glass blowing and not another craft? I'm curious as to what separates glass blowing from other crafts and manual arts that warrants it a dedicated department in an academic facility.