Posted due to popular demand....
Explanation of the more ambiguous categories:
Food = any ready-to-eat foods such as meals at restaurants or snacks on the road
Travel = travel gear, maps, guidebooks, etc.
Communication = Pre-paid SIMs, internet access
Souvenir = mostly postcards and postage stamps
Transportation = includes all transportation except airfare
Vacation = South America cruise and Flying Kiwi tour in New Zealand