8.5 x 8.5 Square
What's not to like about the Simple Square? You almost can't get more perfect than a perfect square. It's cute. It's fun. It's lightweight. It's portable. There's not too much more to ask for.
This book format makes a great party favor or thank-you acknowledgment; it's a creative way to show someone how much they mean to you. It's also a popular size for poetry books. Depending on the length of your poems, one or two fit beautifully on each page.
Currently, the Simple Square is available as a softcover book that's bound in 100 lb. silk cover stock. The pages of all books are printed on 100 lb. silk paper, which has a lovely sheen without being shiny. (No need to worry about fingerprints all over your photos!)