This follows a recall last year of toys containing small magnets.

FORBES: Toy Story

Over the past year, there has been one child death and many injuries from swallowing small magnets in magnetic building toys and jewelry, according to U.S. PIRG, a federation of state consumer interest groups.

FORBES: Toying With China

Scientists have been able to make small spintronic processors using magnets but only at ultralow temperatures.

FORBES: Magazine Article

The small color coded "blocks" snap together with magnets allowing even a novice to create a functioning circuit in seconds.

ENGADGET