Literally the first thing I've ever bought here and worth every penny.
I'm frequently referring to this book for inspiration and I've blopped many of these puzzles into my ongoing campaigns. My players ALWAYS loved the little challenges, breaking up the usual combat-exploration-social routine. The hints and guidance makes it easy to scale the puzzles and support players (sometimes without them even noticing). That results in some great success experiences and can animate a whole table.
[5 of 5 Stars!]