Line an 8×8 baking pan with aluminum foil or parchment paper, leaving a few inches of overhang on two of the sides like handles. Generously coat the foil or paper with baking spray. Set aside.In a microwave-safe bowl or a small saucepan over medium heat, combine the honey, peanut butter, and coconut oil. Melt gently and stir until smooth and combined. Remove from the heat and stir in the vanilla extract. Let cool for 5 minutes.In a large mixing bowl, combine the oats, cereal, flaxseed, cinnamon, and salt, then stir in the dried fruit, nuts/seeds, and chocolate chips. Pour the peanut butter mixture over the top, then stir until the ingredients are evenly moistened.Scoop the mixture into the prepared baking pan, then with a spatula or your fingers, press into an even layer. If the mixture is too sticky, lay a sheet of plastic wrap over the top, then press on its surface. Place the bars in the refrigerator to set, at least 2 hours or overnight. Once fully chilled, remove the bars from the pan with the foil or paper “handles,†then, using a very sharp knife, slice into bars. Enjoy immediately or store in the refrigerator or freezer for later.