I struck gold at Disney's property control a few weekends ago. All of those large spools on the table were a just a dollar! The white and yellow spools on the windowsill were finds from the same place a couple months ago. The tiny (normal sized) spools in front are just for reference. If you're a cast member, and you're in the area, there are probably plenty left.
These could have come from anywhere in Disney World, judging by the color scheme I'm going to guess that all this thread was used for costumes either somewhere in Animal Kingdom, or Adventureland. I will probably use it for various projects on my sewing machine and for endbands. I wonder how many hundreds of endbands all of that thread could produce. Yeesh! If you need any of those colors, let me know, I just might have some to spare!
Property control is a magical place. It consists of two buildings, one for damaged items and things that have been long lost in the parks, and another for overstock and things around property that aren't needed anymore. You can even find old vehicles and machinery. Whenever we go, I head for the section in the back where I usually find something I can use in the bindery.