Magnetic materials are great for promoting hand use as clients feel the attraction/repelling tug/pull between objects. The following Instagram post shows how to use magnetic construction tiles to cover hidden treasures. Encourage clients to stabilize the board with the helper hand while removing the magnetic tiles and hidden objects with the worker hand.
The following activity involves placing a broken Connect Four board on top of a metal surface and inserting magnetic building pieces inside the openings and magnetic balls on top. This task works on motor planning, eye-hand coordination and sequencing skills.
The blind-deaf client shown below enjoys the sensory stimulation provided by magnets attracting and repelling as he pulls them apart and inserts them into the container.