There is one amazing one I gleamed from a Nasser video, it seemed really awkward at first but then I tried it and totally undestood it. He was working traps with a cable (lat pulldown) station, he attached a tricep pushdown bar to the cable (which was just over head height) stood back about 2-3 feet from the seat/padding and pulled the tricep bar towards his brow/head. Best thing I have ever done for traps, once I started doing this they exploded in size, you get a really good contraction/pump from doing it this way, instead of just doing shrugs. If you can't imagine it, think of it as a cable lat row but done to your brow/head.