1: Passports all up to date
2: Apply for necessary visa
3: Buy some local currency
4: Apply for international drivers license
5: Headphone adapter
6: Buy travel pillow
Image from @Travel Universe
7: Headphones for the plane
8: Buy gorgeous flight essentials
image from peep travels
9: Apply for travel debit card
10: 2 pairs of comfortable shoes
11: Sunscreen
12: Insect repellant
image from google
13: Travel adapter plug
14: Travel toothbrush
image from amazon
15: Buckle straps
16: Download essential travel apps
17: Get best travel insurance
18: Get necessary vaccinations
20: Book dog into kennels/cattery
21: Turn off all plugs
22: Turn off water
23: Divert the mail
24: Turn heating down (not off!)