BookBook Travel Journal for iPad ($100) is Twelve South's largest BookBook yet. Designed to work with any generation iPad, including iPad minis, it's made for those who rely on the tablet and its accessories. Inside the pretty leather-bound book, there's room for an iPad, plus lots of extras. This includes space for large headphones, plus elastic bands and pockets all over the place. The whole thing zips shut, masking your electronics from obvious…