Any old…
Definition 1 of 1
Pro Tip 1/3Colloquial Usage
Used in casual conversation, not in formal writing or speech. 
Just jot it down on any old piece of paper.
Pro Tip 2/3No Particular Choice
Indicates that selection is not specific or not limited; anything will do. 
You can take any old road to get to the farm.
Pro Tip 3/3Conveys Indifference
Shows a lack of concern about which option is chosen. 
Wear any old dress to the party; no one will mind.