I feel ya on that, i love to show off my cheekbones. Ive used vanilla pigment on my cheeks but never just on cheek bones but it worked pretty well on the cheeks cuz it was pretty but still looked natural. For something cheap besides pigment samples (too messy for everday), Ive used milani glimmer strips.
**edit: I tried the pigment again and it didnt show up that much -- it was really subtle. try the glimmerstrips for more shimmer ...