Preheat your oven to 350°F (175°C). Grease a 12-cup muffin tin or line with paper liners.
In a large bowl, whisk together the flour, sugar, baking soda, cinnamon, and salt.
In another bowl, beat the eggs, then add the oil and vanilla extract. Mix well.
Stir the wet ingredients into the dry ingredients until just combined. Do not overmix.
Fold in the grated carrots, grated apple, coconut, raisins, and walnuts.
Spoon the batter into the prepared muffin tin, filling each cup about ¾ full.
Bake for 20-25 minutes, or until a toothpick inserted into the center of a muffin comes out clean.
Let the muffins cool in the tin for 5 minutes, then transfer to a wire rack to cool completely.