My mum keeps hers up till February. This year mine are still up, me & OH have been ill since Christmas day & I usually have my mum round between christmas & NY for a christmas celebration at mine, so i'm thinking to try and still do this :-?
I know theres something called candlemas on 2nd Feb that is said to have at one time been the time to take decorations down....
I'd feel better about it if it wasn't just me (and my mum)
PS. i have no kids yet so they wont be being bullied at school for having a weirdo mum