Headsets with mikes - big box of them, USB and 3.5mm jacks (Stroud GL5)

There must be 30+ units in this box. Mainly Plantronics. They came from the closure of an IT company. Unfortunately, the clearance agents just threw them all in a box. I have sorted a few out which I have already Freegled, but it is a nightmare trying to untangle them. TBH a fair few of them look to be in well used condition, but if you have the perseverance, I am sure that some workers and spares could be extracted from this rat's nest of cabling.