Use a powerful electromagnet to pull him/her/it out. Any other objects attached to the magnet are extra.
Danny would go ghost and phase through the ball pit to find David while Sam shakes her head in disappointment. Lin and her career would be too busy making out in the bathroom to look for Moh. Mako would be shouting at Wu that they don't have a child together while Wu continues to insist that the one-sided crush between him and Mako is on Mako's side. Sasha would elbow Jean in the face and then look for Lil' Taters without him. Brock would have his harem fan out in a search formation.