Capture Eggs are a Donator and Voter perk. They are used to pick up some mobs so that players can carry them in their inventory, and spawn them wherever and whenever they want.
A Capture Egg allows you to capture any passive mob, Zombie Villager, Skeleton Horse, or Zombie Horse by holding a Capture Egg in your hand, looking at the mob, and right clicking.
The Capture Egg is crafted in the normal Crafting Table. Its recipes are listed below.
The Fragile Capture Egg breaks after the mob inside it is placed.
The Reinforced Capture Egg does not break after the mob inside it is placed.