subatai_baadur, people wish for money because this particular middle-man can be transformed into anything and so it saves specific wishes.
Anyway, for 1 id take the ability to shape-shift into ANYTHING i can htink of (shape, size, colour). I can use thins to heal injuries too (of course).
Ability to read peoples minds (i never did 'get' anyone, maybe itll help - or at least confirm some things ive always thought).
Immortaility, but i can die if i will it (eternity IS kind of a long time). This works well wish shapeshifting, because i can make myself look as if im growing older.