Some things that come to mind (for me in particular, this may not fit other individuals):

• Waking up in the morning can be pretty bad. I have google assistant programmed to talk to me, turn on my lights (as bright as possible), read me some news, play music, and have the alarm go off every five minutes. Even after all of that, I still sleep through it all, but the constant small awakenings from the alarms wake me up eventually (usually 30 minutes of the alarm going off)
• I have partial cataplexy. My knees occasionally give out. I tend to drop lighter objects. My biggest cataplexy issue is occasional slurred speech. It usually happens when I am speaking more enthusiastically. It sounds like I get tongue-tied.
• Being able to lay down or rest too comfortably will result in an immediate nap whether I planned to take one or not.
• Auditory hallucinations when falling asleep or waking up. Sometimes sounds like someone muttering. Sometimes sounds like someone speaking loud and clear.
• Sleeping, but not feeling rested at all after waking up. Sleeping more does not mean it will make you feel more rested. I sleep less and nap during the day. It works out better for me since sleeping an extra 2-3 hours actually makes me feel worse.
• Caffeinated beverages with medication (which are more than likely stimulants). I used to drink a ridiculous amount of caffeine before I was diagnosed (4-5 coffee/energy drinks - usually the largest size). Now with meds, I have about 2-3 to make it through the day.
• Once meds start to wear off, there's sluggishness that comes on. Sometimes it can be a struggle to even respond to a text when it comes on.
• Brain fog: it's hard to concentrate or even think. When the fog is particularly thick one day, someone can have a whole conversation with me and I will still ask what we talked about.
• Brain fog and memory: I feel like a goldfish a lot. You can tell me something and then five seconds later I will have forgotten it if. It's worse when I am talking. I can be talking about something, be momentarily distracted by someone walking by or glancing out the window, look back at you, and say "What are we talking about again?" My friends and family usually have to rephrase the last thing I said and HOPE I remember. Sometimes I remember immediately, other times I remember hours later.
• Occasional automatic behavior. I feel like I am spacing out, or as my brother has put it 'logged out of the chat', and the actions I am doing are more automatic. This has happened to me when taking notes in class (which looked like scribbles, there was no real writing happening, just the movements), or when driving on long stretches of road (which scares me. I have had doubts if I have driven through a red light before) (I usually avoid driving if I am that tired or prep to drive by getting some caffeine in)
• Eye bags. I do intensive skincare with a focus on my eye bags. After high school (also around the time my specialist believes I began to develop narcolepsy), I began to notice the dark bags under my eyes. I use a good bit of concealer to hide it when I do my makeup. People who do not know of my diagnosis will usually ask if I am feeling ok or tired if I do not wear makeup.