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The Alien Thinking Cap is a head item in Club Penguin. It costs 50 coins in the Costume Trunk and Monster Maker Catalog, and only members could buy it.
|| Available from
|| Available until
||October 10, 2008
||November 21, 2008
|November 18, 2010
||December 28, 2010
|September 6, 2012
||October 18, 2012
|May 8, 2014
|Monster Maker Catalog
||October 27, 2009
||November 1, 2009
Names in other languages
|Portuguese||Chapéu Miolos em Conserva
|French||Le Chapeau à Méninges d'E.T
|Spanish||Cerebro de extraterrestre