I my art class we had a furnace so that we could cast aluminium. So you would carve a piece out of polystyrene foam, add sprues, pack it in sand and cast it in aluminium. I never did get around to trying it. But I did have a painting exhibited in town and received a certificate signed by Syd Nolan (famous Australian artist). I don't why I got that certificate.
Glass blowing would be amazing! A couple of years ago we visited Kufstein in Austria. I had never heard of it before, and having visted I can kinda see why... But it has the Riedl factory which produces some of the best wine glasses. You can tour the facility and it's really hot! You walk around a catwalk which encircles the glass-blowing area so it gets quite toasty up there. But the highlight of Kufstein for us was a cocktail bar called Stollen. It's hidden right in the middle of the small old town, dug into the mountain under the medieval fortress and behind a restaurant. It was dug into solid rock as a bomb shelter in the 1920s. So it's a rough hewn hole in a mountain with an ornate timber bar inserted into it. It's spectacular and the drinks are fantastic. It has thousands of different kinds of gin.