Passport                                                                                                                         (make a copy of it to leave at home, in the event that you lose or misplace it while traveling overseas)     

Camera / Film (the average number of rolls used per person/per tour is 15)
Airline Ticket
Prescription Medicines 
Credit Card / Traveler Checks

Paints
Pencils
Palette
Brushes
Drying Box
Paper Towels
Small Containers
Lightweight Panels
Painting Box / Tripod                                                                                                          Watercolor Paper /Tape
Umbrella / Wide-brim Hat
Sketch Pad / Note Book
Sun Glasses / Sun Screen
Comfortable Shoes / Sneakers (suitable for hiking and many hours standing)
Travel Alarm Clock