i have several, ill post as many as i can remember:
1. this is my worst one, when i was young i had a dream that i was at my nans house with my brothers and suddenly there was an air raid siren and the sky turned a reflective purple, and started to fall to the ground as a gas, we closed all the windows and doors but it still found a way in and we hid from it, if it touched us we would violently vomit and turn into a creature that was kind of like a mix between farcrys monsters and a vortigaunt that tried to kill everyone.
2. i was in a tall dark chamber and a giant red bug thing like ikuagamon from Digimon was in front of me and it had luminescent green tubes behind him, he then picked one of my friends/family members up and placed them behind his wing and they dissipated and somehow sunk into the green tubes behind him that seemed to be filled with some weird gel and then it chased me down pitch black corridors where all i can see is it.
3. running through an unknown house with a giant creature outside of it peering into the windows to try and see me and then kill me
4. one that everyone's had, seeing a long road ahead of me and then trying to make a step onto it only actually move while asleep and because there is no roads in a bed i jolt into an unpleasant waking
5. sitting in an empty house with no one anywhere, being completely alone forever.
and thats all i can remember.