RULES:
They can be magical or science fiction,
It cannot have its own will such as a genie or a fairy god parent,
Non-sentient animals are permitted,
They can be any size from the one ring to the death star,
It has to be ONE item or object, not a set like the seven chaos emeralds,
It can be a single item with multiple functions such as Ironman's suit,
It can be a serum or something that can give you super powers like Captain America.