Researchers, believe it or not, ingested Lego toys to see how quickly they could be, um, excreted. Yes, this actually took place. This "work" was published in a journal.
foreign body ingestion
A Colorado toddler required emergency medical intervention after ingesting 28 high-powered buckyball magnets that began to erode. Major surgery can often result, depending on the urgency of the clinical situation, and it can possibly lead to the removal of segments of bowel.