Hermione made purple and gold streamers erupt from the end…

““Hermione made purple and gold streamers erupt from the end of her wand and drape themselves artistically over the trees and bushes. “Nice,” said Ron, as with one final flourish of her wand, Hermione turned the leaves on the crabapple tree to gold. “You’ve really got an eye for that sort of thing.” “Thank you, Ron!” said Hermione, looking both pleased and a little confused. Harry turned away, smiling to himself. He had a funny notion that he would find a chapter on compliments when he found time to peruse his copy of Twelve Fail-Safe Ways to Charm Witches ; he caught Ginny’s eye and grinned at her before remembering his promise to Ron and hurriedly striking up a conversation with Monsieur Delacour. “Out of the way, out of the way!” sang Mrs. Weasley, coming through the gate with what appeared to be a giant, beach-ball-sized Snitch floating in front of her. Seconds later Harry realized that it was his birthday cake, which Mrs. Weasley was suspending with her wand, rather than risk carrying it over the uneven ground. When the cake had finally landed in the middle of the table, Harry said, “That looks amazing, Mrs. Weasley.” “Oh, it’s nothing, dear,” she said fondly. Over her shoulder, Ron gave Harry the thumbs-up and mouthed, Good one. ””

— J.K. Rowling