Ask HN: Why does Evernote sell socks?

So I like Phil Libin. I think he is a brilliant entrepreneur and what he has done with Evernote is awesome. I love the service.

But I don't get the marketplace idea.

They are selling items that seem to be non-related to their service.

A pen, that allows Evernote to capture data more quickly is understandble...but a backpack [1] and socks [2]...I don't get.

Can someone explain this to me please?

P.S. I have faith that Phil knows more about his business than I do, and I am pretty sure there is a completely rational explanation...but I am just curious.

[1] - https://www.evernote.com/market/feature/rucksack?sku=BAGS00103

[2] - https://www.evernote.com/market/feature/socks?sku=SOCK00106