(Susan M. Pigott is a fountain pen collector, pen and paperholic, photographer, and professor. You can find more from Susan on her blog Scribalishess.)

The Hobonichi planner is a Japanese diary/calendar made by Hobo Nikkan Itoi Shinbun. Originally only in Japanese, the planner is now available in English (but see below) and can be ordered through the Hobonichi (English) store. It comes in two sizes: the A6 Techo (5.8"x 4.1") and the A5 Cousin (8.3"x 5.8"). Unfortunately, only the Techo is available in English. Apparently the company offers the Cousin only in Japanese. The Hobonichi uses Tomoe River Paper, a high-quality, super-thin, fountain-pen-friendly paper, which is one of the reasons so many people love this planner.