I've discovered entirely new categories (to me) of arts and crafts in that way, from 19th century American coverlets to Welsh stick chairs, eventually learning about the nascent Arts and Crafts movement's evolution in the 19th century in response to the soulless factory-produced goods of that age.[0]
As a result, today I probably have some of the largest context-specific art collections in Texas, if not the United States, which includes Japanese Takatori ware, Ukrainian art, handmade Windsor chairs, and Anagama (dragon kiln) wood-fired pottery. All discovered through Etsy.
In some respects, I am under the impression that most people simply don't know what they're looking for, i.e., they don't know how things are made and therefore don't know how to search for it. The genuine real McCoy is there, behind the first page of mass-produced imposters, you just have to dig for it.