You wake up in the middle of the night coughing. Your house is on fire. Fortunately, all your co-residents (edit: including pets) are elsewhere tonight - you are the only person living thing in, or even near the house. All your bikes are securely locked up in a fireproof, waterproof, lightningproof, meteorproof outbuilding. Edit: The fire is in the walls, floor and ceiling and there is no chance of even a fleet of fire engines putting it out in time to save all your other belongings, but remarkably the path to your selected item is devoid of fire. You have time to grab one, and only one material possession. What is it? I'd like to kick this off with an interesting one, but I'm afraid I'm a boring b*****d and think it would be the external hard drive with all digital work I've done on.