The studios have auctions quite frequently. The first "sale" i knew of was when MGM was selling wardrobes from various movies (MGM is about 4 miles from my residence) in the late 60s. Ever wonder where hippies got their vintage clothing? Much of it was from these types of sales.
My girlfriend of the time and her two friends, would commandier my mother's sewing equipment in our basement rec room, to make hippie clothing for sale at the head shops in the Chicago area. One of their big items were those knee length blouses with the flouncy sleeves. Those and the long pseudo-silk head bandanas that everyone was wearing. (like Jimmy Hendrix). They would cut out the patterns on the ping-pong table with those electric scissors that looked like fishes and were so popular back then. And do the sewing on my mother's fancy sewing machine, that she used to make crafts for her church group. She made hundreds of those stuffed pink elephants that the church group sold at their bazaars, and were given to kids that had surgery at the local hospital. She also made a lot of bean-bag frogs, and pin cushion dolls, that to me were akin to voodoo dolls. Not something a church should be selling, in my opinion.