Theodore shot a look at Blaise next to him when he opened the box and saw the panda teddy bear, but he silently jammed the heart into it and sewed it up. No wish (sorry "Dougie"), but if asked about it, he'd make something up on the spot.
He aimed a quick expelliarmus at the bear and then automatically raised his wand defensively. When it started to dance, he let out a sort of cough/laugh and relaxed a tiny bit. He took a moment before he continued, watching his classmates, the spells they chose, and what happened. In the end, he spent most of the class rotating through disarming spells, freezing charms, binding spells, stinging hexes, and stunning spells- all nonverbal.