As I have said plenty of times, Palettes are an awesome way to get a lot of products for a little money.
These Sephora palettes showcase this well.
Blockbuster box has tons of eyeshadows and lip products to mix and match for endless possibilities no longer available (thanks Z & T)
Sephora collection Color Diary consists of removable palettes (each has e/s blush, gloss) that you can carry with you.
Makeup palette to go small and sleek, great for travel
Make It A Beautiful Day!