Cheeseburger Backpack is the first episode of Steven Universe where we see Steven and the gems adventuring some place outside of Beach City and see a piece of gem history. Alongside that, Steven finally got his order of a backpack that is in the shape of a cheeseburger in. Steven figured to bring it with in the mission because of its storage capabilities. This episode proves how much this younger Steven wants to help the gems on their missions and prove he's ready. As well, it shows more of how the gem world works with an ancient gem structure. It really shows the complexity of the gem world earlier in the show without getting too complex with it still being early on in the show. For me, I do have some nostalgia for earlier in the series as I was young when it released and I really grew up with it. Even when I revisit it now, I still very much enjoy it.