A necessity: Trousers. You are lost without them. A change of trousers and a spare pair of underwear is all I need.

A luxury: Books, especially non-fiction and Len Deighton.

A memento: A polar bear's tooth with a Motorhead logo carved on it, a present from a fan.

If only: A credit card with unlimited spending ability.

• Motorhead headline The Guildford Live Music Festival on July 28. Their latest single, God Save the Queen, is out on July 31