The most occuring nightmares in the past would be of taking the elevator (lifts). Often, the elevator will try to kill.
The 1st time when it started was when I was about to go back home in the dream, when the elevator was making an eerie buzzing noise. Neon green light emitting from it and the window glass on the doors looked relatively dark.
It was rather terrifying since the elevator tries to eat. Back then I learned a technique of force wake by rubbing of both eyes and rolling the eyes to the back as much as possible in order to escape.
Another counter with elevators was when the elevator won't allow you you enter, often malfunction and going to a different level then intended. It was rather annoying yet creepy. The trick to this is only to go in quickly with at least 3 adults in the dream.
Many of times, the elevator will try to send me to a deep scary zone when trying to get off at the appropriate floors. Many of times a dreaded looking spirit will eat me. Till one day I trick the dream itself. After entering, move out at the 1st level where someone is leaving. The floor level I choose are often the last to get off. Which leads to doom.
Other nightmares about elevators would include a malay lady with her hands cut off, spliting of walls followed by dropping in larva, and also, a men being cut into halves by a giant cargo elevator.
It was rather brutal, still remain as one top nightmares though now it's not as bad as the past.