Draco watched the children scamper away. With a twinge of dread, he saw Scorpius and Cassiopeia deep in discussion as they headed for Weasleys' Wizard Wheezes. George Weasley used to give them a twenty-percent discount on all their purchases, until the day they turned the formal dining room into a swamp and Draco had gone to the store to vent his rage.
Now George Weasley gave them a fifty-percent discount.
While the interactions of Draco and Ron are vastly more amusing, I can't pick a favorite and they work better in context, so instead here is another piece involving the Malfoy children.
"Is he going to be our new mother?" Cassiopeia asked. "I don't want a new mother."
"Eww," said Columba.
"Don't be so close-minded," Lyra told her twin.
"It's not that," Columba said. "I had an image of him dressing up in a witch's robe. He hasn't the shoulders or chest for them."
Truly the only thing keeping this story from getting a 5star rating from me is the consistent 'morning after' transition every time Harry and Draco begin to actually become intimate (personally it helps that Draco is professed to be a bottom throughout, which I quite enjoy).