Funko Pops, to me.
I understand that some of them are fairly overpriced, but I also really like them as is. It doesn’t work on all characters, but it sometimes work on a lot and there’s so much representation and variety that it’s good to have a few.
If people want to talk about waste of plastic and vinyl, they should bark at the companies who make teeny tiny figurines that serve no purpose and have so little detail that spending any money on them is a waste.
Buying music as CDs. Sure they were expensive at their peak, but they came in high quality, I could rip and do with them as I wished, while still having an offline copy. I have a lot of my old ones from childhood