I was going to say that I make plushies periodically, but thought better of it. Oops, too late.
Hydrogen, the smallest, lightest, and oldest of the elements.
Iodine, an important trace element in biology and useful in medicine.
Magnesium: burns with a white flame, and is a vital component of chlorophyll.
And Calcium, who's good for your bones.
Hope you like!