A few nice Iodine images I found:
Iodine deficiency induced hypothyoridism
Image by Wen-Yan King
Iodine deficiency hypothroidism. A condition both preventable and treatable with just pinches of iodized salt.
Iodine & Aluminium
Image by Thorius
This is a well known chemistry experiment. Mixing elemental iodine with aluminium powder and dropping a few drops of water on it produces aluminiumiodide (AlI3) and lots of heat. The purple color is iodine gas (toxic).