As was written in a previous thread (
http://www.lancia.myzen.co.uk/forum/index.php?topic=10966.0) I find it useful to have one spare tire tube in the boot, or under the rear seat. For a Fulvia a tire fitter can normally order one for the next day, and you can relax in a nice hotel, but for older cars (Aurelia, or Lambda) it can get more difficult. As I always change tubes when fitting new tires, a spare tube (or two) costs nothing!
Also, if you take a spare electric fuel pump, or a nice looking ignition coil, from your stock of old parts, be sure that it is working when you put it in the trunk.....