What gear does Avy Kennedy recommend for a Route 66 roadtrip?

The available content I’ve got doesn’t list a specific “Avy-approved” Route 66 gear kit, so I don’t want to make things up. Based on general roadtrip best practices though, I’d recommend at least:

1. Paper map or offline maps
2. Basic car emergency kit (jumper cables, tire inflator, flashlight)
3. Reusable water bottle and snacks
4. Power bank and multi-charger
5. Sunglasses, hat, and light layers

What kind of Route 66 trip are you planning—camping-heavy, motel-hopping, or a mix?