Ways for students to kill you ?

[The Nr Fairy]

Due to the course I'm on, this sort of info is top on my list of "things to know", as well as all sort of flying and groundschool related guff.
Things I've heard of and/or done myself:

1. Student pushing LEFT pedal in an CCW rotor system helicopter when entering autorotation.
2. Students bunting - ex f/w perhaps ?
3. Rolling throttle OFF when practising stuck collective and RRPM is already low.
4. Student not lowering lever when recovering from extended range auto (75kts, 90% RRPM).

Any more would be greatly appreciated.