"Usually use my skills in charms for decorating cakes or entertaining Lilu when she was at home on her own but yeah," he looked up at the point on the ceiling where it all joined. Then he shrugged his shoulders, assuming it would be gone sometime tomorrow. But there were snacks and hot chocolate and the house-elves must have been very busy to put all this together. Maybe they had known Sirius and Remus were coming.
Teddy pulled a basket to safety as Sirius dove in through the entrance, laughing at the surprise of it and the way he immediately took up as much space as was possible. "So glad you're pleased," he was grinning. He picked up his wand and wordlessly started guiding the lights inside around as they floated about until they formed the familiar constellation of Canis major. "There. Now it's yours," he offered, tucking his wand away.
"So what didn't the house-elves put in the baskets?" he started pulling things out, taking inventory as if he needed to plan the perfect order to eat his snacks.