In the good old days 20-30 years ago especially red and sometimes yellow plastic utensils used in the kitchen could contain a large amount of cadmium. Root fillings contains lead and cadmium. It has been found in children's toys, raincoats and backpacks made of vinyl and PVC according to a GreenPeace investigation. However Greenpeace is not very trustworthy according to many articles. It could be that Greenpeace are right, but it could also be that they want to confuse the public which makes the whole thing even more scary.
Fact remains if it is easy to avoid it, try to avoid it.
It also can contain heavy metals like Lead, as well as Arsenic, Barium, Cadmium, Iron, Iodine, Mercury, Selenium, Silver etc. Avoid toys made of vinyl or PVC that small children puts in the mouth. Try to get hold of honest old fashioned toys made of unpainted wood or cloth or other alternative materials. Make sure everyone washes their hands before eating. Don't throw batteries that contain cadmium in the normal garbage bin.