"Dustbin lids" is Cockney rhyming slang for these; I have 2 of them at home
It's 
the numerical home of Winnie the Pooh & his buddies... [DOC] [TLE] Language: Top 100 Cockney Rhyming Slang Words and Phrases ... [PAR] Jan 29, 2012 ... London Cockney Rhyming Sland dictionary - top 100 words and phrases!