Birdstrike - damage to fuselage/flaps/engine etc - what sort of approach you would make?
Fuel shortage
Total instrument failure
Stuck ASI + any combination
Do you know what to do if you have an RT failure? Do you know the procedures for joining with no RT? Do you know what ATC flares/lights mean?
If practising unusual emergencies, do it with an instructor or at height (for simulated aileron failure etc)