"Dustbin lids" is Cockney rhyming slang for these; I have 2 of them at home
[DOC] [TLE] The Definitive Guide to Cockney Rhyming Slang - Online Editing ... [PAR] Cockney Rhyming Slang is a part of the English language that many English 
learners ... People who use these slang expressions generally substitute one 
word with two or more ...