Whether the numbers denote an organization system remains to be seen, but you could certainly devise a system of your own. The plain baskets on their own would have been a little boring so we like this simple addition. You could also try letters or a simple graphic.
Speaking of simple graphics, if you're admiring the sparse apple print, it's Enzo Mari's iconic apple print (also seen in Matthew Broderick and Sarah Jessica Parker's Hampton's kitchen).
You can see the rest of the home Hank Azaria shares with Katie Wright and their 2-year-old son Hal at Architectural Digest.
(Image: Roger Davies/Architectural Digest)