Pile of fire gecko eggs
It is a quest item for the 3rd part of Bleed Me Dry. Red Lucy of The Thorn will give you 500 caps for them, 700 with a Barter check of 70. It spawns once this part of the quest has started. It is interacted with, not taken, and cannot be dropped.
It is not essential to get this item as you can simply give Red Lucy 12 fire gecko eggs.