I get some reoccurring themes in dreams, I'd say the most vivid one is going back to school. I'll get a dream where I'm back in school, or perhaps that I just never finished. The actual context as to why I'm in school changes but is always known. It's like if when I start a dream lot of contextual information is just preloaded. I did not dream it but in the dream I know of it. There's various things that can happen in these dreams, like forgetting where my locker is, or forgetting my combo, or both are typical themes. Or being late for class. Or being in class and flipping through my binder and finding math (seems to always be math) related stuff, and realizing that I have not been to math class in a while, then I panic realizing that I may have been accidentally skipping it for some reason, so I try to find my schedule, realizing that I've just been going to all my other classes by memory and keep forgetting about math. In some dreams, I'm actually at home, and go to the bus stop. I may not actually go to school in that dream as I'll wake up before, but I can still picture the building, situations etc that are ahead of me. In one dream, Bob Barker was in it. He just showed up to a class randomly and said hi to everyone. I was late because I could not find my locker but I got to shake his hand just as he was leaving. So randomly hilarious.
One thing that's interesting about lot of my dreams is that most locations tend to be pseudo representations of real ones, some are quite different while some are similar, but they don't tend to change from dream to dream. Certain things may even follow, like if something happens to the location in one dream, next time I dream about that location it will be a continuation. Usually lot of stuff happens between dreams, I'll remember it having happened, but I never actually dreamed it. It's almost like my brain has a bunch of virtual worlds and when I dream it just loads one. The worlds are always "running" in the background so if one does not get loaded for a while more stuff can have happened. Like I'll remember something that happened in the dream, while I'm in the dream, but does not necessarily mean I actually dreamed that particular thing, I just have contextual awareness of it.
Dreams are weird.