[MunchkinMan]

The implication of the card is a specific type of Item, not necessarily special features of the Item, like who or who couldn't use it, or the value of its bonus. The "etc." is to include things like Steeds and Steeds, not to allow for an incredibly open interpretation. However, if we were to apply it to your "biggest bonus" question, the card says that the Curse would affect "any Item BUT that type," which would mean all Items but the biggest Item, not just an Item.