Change it up:
1. If you don't have wheat germ, try wheat bran or oat bran, or simply add one cup of extra oats in place of the wheat germ.
2. Instead of raisins, try dried cranberries or blueberries (can add before baking, or after).
Dress it up:
1. For cinnamon granola, add 1/2-1 teaspoon cinnamon to dry ingredients.
2. Add 1/4-1/2 cup slivered almonds to the mix before baking.
Dress it down:
Eliminate all the nuts and dried fruit frills to keep it really simple. You can always just throw in a handful when you are serving anyway!