A comfort object, more formally a transitional object or attachment object, is an item used to provide psychological comfort, especially in unusual or unique situations, or at bedtime for children. Among toddlers, a comfort object often takes the form of a blanket or a stuffed animal, doll or other toy, and may be referred to by a nickname such as blankie.

A blanket is a swath of soft cloth large enough either to cover or to enfold most of the user's body and thick enough to keep the body warm by trapping radiant body heat that otherwise would be lost through convection.