On my knee pad:
Going foreign check list - Gen Dec, fuel invoices, passports, special branch etc..
Passenger brief - This was made a requirement in the dim and distant past.
Transponder codes - 7700 etc..
Holding procedures - sectors 1,2,3 diagrams (was in old AERAD yellow book).
Conversion tables - gallons to litres etc..
Morse & phonetic codes -
Factors affecting performance - Take off from grass, increase in alt & temp etc..
Useful telephone numbers -
Check list for aircraft -
Plog
Relevant Airfield plates -
Stop Watch -
Pens & Pencils -
Hope this helps:-)