neat as a new pin
Tidy; clean; in good or neat order. I expected Danny's student apartment to be a total mess, but is was neat as a new pin!
(as) neat as ninepence
Very tidy, neat, and well-organized; in good order. After my kids made me breakfast in bed, I expected the kitchen to be a mess. But was I ever surprised to find the whole place as neat as ninepence when I came downstairs! James is so meticulous with his office, always keeping it neat as ninepence.
neat as a bandbox
Impeccably dressed; stylish. A bandbox is a container that was used to store accessories like collars and ruffs. Dave, I just love that suit and tie on you! You look neat as a bandbox!