Magnet Pull Maze

The ball is sealed inside a glass box. Your magnet is on the outside. Wherever you drag it, the ball leans toward it — slowly, stubbornly, always through the nearest gap. The maze walls do not care how hard you pull. They only let the ball through where the openings are. Lead it up, around, and out. Touch a wall and it will scrape along, losing ground. Panic and the ball will jam in a corner. No timer. Just a steady hand and a very patient piece of metal.