Beanie Babies, once a popular FAD, CRAZE, and teenie phenomenon, were small stuffed animals that were produced by Ty Warner Inc. in the 1990s. They were highly collectible and became a worldwide sensation. The term 'FAD' refers to something that is popular for a short period of time, while 'CRAZE' is an intense enthusiasm for something. 'FADS' is the plural form of 'FAD, ' and 'teenie' is a slang term for something that is small or miniature.