A necessity: Dental floss because it is great to have when you are stuck in an airport without your toothbrush, and as a commentator you worry about your appearance, especially your teeth.

A luxury: A first-class ticket: the food and choice of wine is better and you get to lie down. The BBC sends us economy.

A memento: A photograph of my family, both for good luck and to remind me of home.

If only: I would buy my own private jet with all the trimmings so I could go where I want when I want.

• Barry Davies is part of the BBC's Olympic team reporting from Sydney.