I have always found glass blowing absolutely fascinating.
Ancient Greek Poem on Glassblowing
This fragmentary poem was written in Greek on a papyrus scroll found in Egypt. It dates to the 3rd century CE.
First he heated the very point of the blowpipe, then snatched from nearby a chunk of bright glass and placed it skillfully within the hollow furnace. And the crystal as it tasted the heat of the fire was softened by the strokes of Hephaistos like…He blew in from his mouth a quick breath…like a man essaying the most delightful art of the flute. The glass received the force of his breath and became swollen out around itself like a sphere before it. It would receive another onslaught of the divine breath, for often, swinging it like an ox-herd his crook he would breathe into…
I don’t know if this next video techniquely counts as glass blowing, but I have to admit my mouth dropped open a couple of times while watching this guy work.