Time travel backpack.

If you pack a bag to travel across time, maybe to give it to a past self or a future version of yourself, what would you take?

If I had to pack the bag it would mostly consist of books. The minimum version would have at least these:

1. This is Strategy by Seth Godin
2. This is Marketing by Seth Godin
3. The Practice by Seth Godin
4. The Art of Possibility by Rosamund Stone Zander & Ben Zander
5. Pathways to Possibility by Rosamund Stone Zander
6. Big Magic by Elizabeth Gilbert
7. Atomic Habits by James Clear

What would your bag have?