Today’s 33Charts topic Children and Magnets: a Fatal Attraction gives an update on rare earth magnet ingestions (neodymium) along with some other useful links.
Addendum: Also a link from NY Times on 8/17/12: http://www.nytimes.com/2012/08/17/business/for-buckyballs-toys-child-safety-is-a-growing-issue.html?_r=1&nl=todaysheadlines
Previous posts on this topic:
gutsandgrowth 