The Nest Egg was a repository for the life force stolen from children by a group of demons.
Coming into contact with the nest egg can be produce very dangerous and eradic results, as Angel finds out when simply standing within it's vicinity for a few moments a violent blast from the nest egg turns Angel into a puppet.
- “Stupid jackass! Might as well walk into a nuclear reactor and lick the core! I mean, anything could've happened to him!”
- ―Polo[src]
The Nest Egg was destroyed by Fred and Wesley via a Binding Magic Reversal Spell.