Indium is my favorite. It's the only element you can safely chew like gum. Second place is Tin, and third is Gallium. Combine my top three together, in a ratio of 20% Indium/10% Tin/70% Gallium, and you get Galinstan, a metal that, like Mercury, is a liquid at room temperature, but, unlike Mercury, isn't incredibly toxic. Massive W (no Tungsten pun intended) for Indium, Tin, and Gallium, the three best elements on the Periodic Table!