I've got a black Shimano XT DH-T780 36 hole dynamohub sitting in my cupboard, but I'd rather have a silver DH-3N80 in 32 hole. I might consider a DH-3N72. If you've got one of those SP hubs I'd be keen on that too.
Mine is brand new in a box, although the box is a touch tattered. Yours doesn't have to be.
Let me know if by some kind of magic this is the kind of swap you'd be interested in.