Chile powder is generally an anemic mixture of mild chile peppers, cumin, oregano, salt, and garlic. For generations, American cooks were paralyzed by this mixture, and in some sick sacred awe of it, they forsook the individual ingredients which composed it. If you really want to, go ahead and buy some. It might come in handy someday. But don't let yourself become seduced by it as your parents undoubtedly did.
Chives are the anemic kid brother of the green onion.
Available in both powder and stick form. Cinnamon sticks are cool to have around, although odds are you won't use them very often. You should already have bought a jar of the powdered variety. Cloves are very strong in flavor, so they should be used sparingly. Cloves make an interesting addition to a variety of dishes.