What foods should you take with you while travelling?

OK, so you travel. What foods should you take with you?

• Drink: Plain water.
• Food:
  • Citrus – from oranges to mandarin oranges, from grapefruit to pomelo, these tend to go OK with travelling.
  • Yogurt – it tends not to spoil easily.
  • Boiled eggs – again, rather easy to carry.
  • Seeds – sunflower may be great, but others are fine, also.