Preheat the oven to 275 °F (140˚C) Spray a 13-by-9-inch baking sheet with cooking spray. Alternatively, cover the baking sheet with a silicone mat or parchment paper.
Mix 2 cups old-fashioned oats, ¼ cup toasted wheat germ, 1 teaspoon cinnamon, and ¼ teaspoon salt in a large bowl.
Whisk together the ¼ cup sugar-free maple syrup, 3 tablespoons vegetable oil, and 3 tablespoons warm water in a microwave-safe bowl. Microwave for one minute or until this mixture starts to simmer. Drizzle over the oat mixture and stir to combine.
Pour the granola mixture into a prepared pan. Working a handful at a time, squeeze cereal to form small clumps.
Bake for 30 minutes. Stir in ¼ cup coconut, shredded or chips, ¼ cup almonds or pecans, and ¼ cup raisins. Continue to bake until golden brown, 20 to 25 minutes longer.
Let cool and store in an air-tight container. Vacuum-packing in a quart jar is even better.