Sure thing. Start with a clear crime scene: the cookie jar, the crumbs, the fingerprints. Pick a single type of crumb—white or chocolate—to be your “evidence.” Then leave a trail: one crumb leading to a paper napkin, another to a toy car, another to a small toy detective. Have each clue point to a clue note, like a logbook page with a simple question. The kids will follow the crumbs, the logbook will ask them who touched the jar, and they’ll piece together the “murder” of the cookie. Keep the evidence logical, no silly surprises, just enough mystery to keep them thinking.