This is going to sound obvs, but I've been getting a lot of ridiculously good silk scarves off of Etsy for super-cheap. I just bought this one from the 70s that's got the Zodiac signs on it and is super-colorful. With shipping it was all around 7 dollars.

Plus, might I recommend vintage Schiaparelli scarves. The line is going to relaunch in a few years, and she has crazy designs, especially from the 50s.