Pyrex
There’s a classic look to vintage Pyrex bowls that modern cooks still love, and the right dish (especially in a matched set) can sell well on eBay, Craigslist or places like Facebook Marketplace.
Fortunately for thrifters, grandchildren cleaning out or downsizing a relative’s home may just want to get rid of Pyrex and send full matched sets off to the thrift store. Study up at a fan site like Pyrex Love and learn how to identify vintage Pyrex. You might be bowled over at what you find.