I have become a BIG fan of "collage crochet". Collage crochet is when you use various colors and weights of fibers when crocheting a piece.
The scarf below was the first item that I collage crocheted. I did it in pinks and purples. I used various "yarns": acrylic, mohair, chenille, polyester, ribbon, fun fur, eyelash, and more! This scarf is currently for sale in my eBay store.
I am a big fan of using varying shades of the same color, and I am currently working on a blue toned afghan in collage crochet.