Don't want to create a new topic, but here: I've found a new abuse in post-CVS derivates, ie. wish confirmation.
Since the game is nice enough to ask "Do you want to wish for..." and display a name of the item that the wish will result in, you can wish for eg. a "bottle" and then see what the potential bottle wished for contains. Thus, you can answer "no" until you get ommel fluids, for instance.
A nice thing to remove in future (amateur) patches