When Darth Vader pours out one for his homies lost on the Death Star, he'd better be drinking something bigger than that shipment of Colt 45 he intercepted from Lando, because there were a LOT of homies on the Death Star. Over a million.
That's why Vader switched to wine. Seems more appropriate for a Sith Lord anyhow. And when he can't finish it, he seals the bottle with this Death Star Wine Bottle Stopper. In the memory of those lost in the tragedy. Let this Death Star Wine Bottle Stopper serve as a reminder to seize the day. You never know what tomorrow may hold. Unless you're Yoda, and even then the future always in motion is.