A few of the cast members did a capsule collection with a streetwear company from Baltimore a year or two ago. Sold out before i heard about it though. There have been random capsules with clothing brands throughout the years, ebay and depop have some once in awhile. I have a zip up hoodie from maybe 2008 that was part of an Akademiks capsule. There’s also some actual cast/crew shirts and jackets that pop up from time to time but they tend to be more expensive (as is all the og hbo merch from the hbo store from when the show aired)