I wasn't the best at science, but I do remember the test tubes. They were kind of neat, but it wasn't like I was good enough to get to mix any dangerous chemicals like they showed in the movies. When I graduated high school I never saw them again, since I made sure to avoid science in college.
I now see test tubes popping up as bud vases, or for other decorative purposes. I think it's a cute idea, and original. The picture on the left looked like the ones I had in high school, it's for sale at polkadotHOME on Etsy. I've also seen beakers and other high school implements used as home decor.
I'm not sure how one comes across vintage science class items, perhaps a retiring teacher? I've never come across any, but I'll keep my eyes out. Like most vintage items, if I can't use it, someone else can.