Traces of lead. In paint.
That's what toys are getting recalled for these days. Well, that, and having small parts that could theoretically be swallowed by children. This sounds a little bizarre to those of us who grew up in an era when Sears would sell you half-inch high toy soldiers that were actually made entirely of lead. Toxic, inhalable, and for the hat trick, they also depicted guns, making them the perfect kryptonite for the modern toy world; I've never owned any lead soldiers, but now I want to buy some just for that reason.
Our grandparents survived the Depression and gave Hitler a stomping. Our parents invented Woodstock and made the cops invent tear gas. We watched TeeVee and played Atari, and our children are swaddled in bubble wrap. Devolution in four generations; sic transit gloria mundi.