I'm currently obsessed with this book of puzzles. I bought it from a sales bin in a book shop and can't put it down. Great book to help pass those boring moments. I like to think that these books make you smarter (or at least think your smarter) . Ow and don't you just love the stylish covers, and they are the perfect size for your handbag.
Pocket Posh logic by The Puzzle Society have there own stylish versions too, the title says it all. There are so many different types of puzzles to choose from like sudoku and 1 minute puzzles.