Once upon a time, at a costume party somewhere in the 1990s, my mate dressed up as Ecko.
He wore pants, Tai Chi shoes, a cloak – and a LOT of bodypaint. The fun bit came when he got absolutely wankered and the bodypaint started rubbing off all over the house. We had to put him in the shower, still drunk, to wash it off (he kept the pants on).
The cloak, sadly was not one of these (may have had less bodypaint if it had been!).
I know it’s the Wannabe Ringwraith version, but it works very well as a stealthcloak :)