Security blanket
From Free net encyclopedia
A security blanket is any familiar object whose presence provides comfort or security to its owner, such as the literal blankets often favored by small children.
The phrase was coined in the Peanuts comic strip created by Charles M. Schulz, who gave such a blanket to his character Linus van Pelt. Another term for security blanket is "wooby", which was popularized by the 1983 movie Mr. Mom.