I like my bones made from a composite of Calcium and Marrow and some other things I don't know the words for.
Most dairy products and especialy milk is good for bones, oh and Rice Crispies because they're fortified with vitamin D.
Myself, I prefer Sainsburys own brand of Chocopops, they're a bit of a cheap spin on Kellogs' Coco Pops but they taste nice and the chemicals keeps me happy