Meteor Egg

The  is a limited-time decoration that was released on October 4, 2016, as part of the Treehouse of Horror XXVII Event. Together with the Space Marshmallow they the seventh and final prize to be won in the event's Act 1.

It returned on October 26, 2018 during the Treehouse of Horror XXIX Event as a possible prize in the Mystery Jack-O-Lantern.

Regular
Space Marshmallow
 * Hibernate - 24h

Quest Based
Space Marshmallow
 * Slink Away - 24h

Trivia

 * While the prize name only mentions Space Marshmallow, it's this decoration (that unlocks Space Marshmallow) the actual prize.
 * Only one can be obtained.
 * It can be placed on grass, pavement, dirt, or the beach.