List by Kafkah, visual by Jana.

- Water
- Handwarmers
- Mittens
- Food
- Money
- Your phone charger
- Your controller
- A setup
- Valid ID, especially abroad
- Deodorant
- Medicine, especially for headaches
- Toiletries including hand cream
- Headphones
- A notebook to write down your set analyses
- A sweater
- Board or card games to play with other people
- Tissues
- More water!