Wendy is a jewelry and metal artist, and here’s what she had to say about her notebooks:
“Why so many?” you ask. Each notebook was bought for a specific purpose, either a class, for use as a guestbook, etc. but ended up as a place to jot things down. Also, they are different sizes, some to fit in my work bag and the big one is great for mind mapping. The sketchbook duality is because I lost one sketchbook, bought another, and then found the first. They travel around the house and take turns in the studio. I plan on only using one at a time in the future.
Read more at Notebooks, Notebooks Everywhere! « Hammermarks.