Magnus finds a reasonable-looking lid and brings it back. After a few moments of fumbling, he figures out how to twist it on and lock it into place. In doing so, he also twists the handle of the food processor around. It's not on purpose, but it makes the same latching sound, so -- maybe that was what this needed? He tries the button again.

"It works!" he exclaims, looking over at Lan Wangji excitedly.