At ALL times he suggests level 20+ characters carry no fewer than 15 world maps on them. They have zero weight, so they won’t impact other items you can carry. They also don’t stack, so they each count as an individual item.
The idea is, if you do unfortunately get killed, it significantly increases the chance that you will drop a world map as opposed to a valuable item such as armor, jewelry or weapons. I found this to be an invaluable tip….I hope you all enjoy it as well!