Dakimakura, Japanese Love Hugging Pillows

Sometimes called a Dutch wife, although the original definition of this phrase is closer to the chikufujin.
In popular culture
In the 2010 episode "Klaus and Greta" of the NBC sitcom 30 Rock, American actor James Franco, playing a fictionalized version of himself, is in love with a dakimakura and starts a fake relationship with Jenna Maroney (played by Jane Krakowski) to counteract rumors.