Send them a holiday gift that will challenge their mind provide hours of entertainment! We include a trivia book filled with more than 2,000 questions to test their knowledge, a pocket Sudoku book that they can bring on long trips, a "Train the Brain" book with various puzzles, exercises to keep their brain fit, a pen and pencil. We'll top the gift off with brain building foods like green tea candies (5 oz) and smoked almonds (2 oz), then tie it up with colorful ribbons and a handwritten gift card. It's a thoughtful holiday gift that will keep them entertained for days!