Take a moment to look at SOFIA by Pelli Clarke Pelli Architects, branded by Anagrama. It looks like something that should be collected and kept in a safe place.
Lundgren+Lindqvist designed the look and feel for Maru, an online boutique that specializes in Japanese design objects.
Letterheady is a blog featuring various letterheads from famous people as well as companies. Here are some some I found interesting: