A standard thing in them is equipment that gives status bonuses. For example, gloves that make you do fire damage. Or pants that make you fly. Or a hat that increases your hit points. The item never really seems to have any association with the bonuses.
But there's always one piece of equipment missing.
Just think of the possibilities!
Bra of Telekinesis!
And, of course, the famed Holy Panties.
Or - possibly even better - Unholy Panties.
Well I think it's a good idea.