The children are making a box of toys in the living room.
box of toys
idiom Slang
Cockney rhyming slang · East London
noise
Origin
As a box of toys, particularly a new one given as a present at Christmas time, causes a great deal of noise to be made.
Please tell the students to be quiet because they are making a real box of toys during the exam.
The neighbors complained about the constant box of toys coming from the apartment upstairs throughout the night.