1
general::
Also, everything under the sun. Including just about everything, whether appropriate or not. For example, Our new car has every feature? everything but the kitchen sink. This hyperbolic term may date from the early 1900s but only became widespread in the mid-1900s. The variant employs under the sun in the sense of "everything on earth," a usage dating from about A.D. 1000.
American Heritage Idioms
2
general::
Phrase(s): everything but the kitchen sink
Cliché almost everything one can think of. • When Sally went off to college, she took everything but the kitchen sink. • John orders everything but the kitchen sink when he goes out to dinner, especially if someone else is paying for it.
McGrawhill's American Idioms And Phrasal Verbs