I'm dressing up as Luna Lovegood for Halloween. I've got the scarf, and now I have the earrings.
Luna was wearing what looked like a pair of orange radishes for earrings, a fact that Parvati and Lavender seemed to have noticed, as they were both giggling and pointing at her earlobes.
"You can laugh!" Luna said, her voice rising, apparently under the impression that Parvati and Lavender were laughing at what she had said rather than what she was wearing. "But people used to believe there were no such things as the Blibbering Humdinger or the Crumple-Horned Snorkack!"
"Well, they were right, weren't they?" said Hermione impatiently. There weren't any such things as the Blibbering Humdinger or the Crumple-Horned Snorkack."
Luna gave her a withering look and flounced away, radishes swinging madly.
-Harry Potter and the Order of the Phoenix
I forgot to include something in the picture for scale, but they're about an inch and a quarter tall and 3/4 of an inch wide.
I didn't have any exclusively orange yarn, so I cut the orange stretches out of my Yarn Pirate Punkin Head yarn. Each radish took two orange stretches, a bit of white undyed knitpicks, and the leaves are from leftovers of those socks I just finished.