I don't like the idea of it being based on "quality", too much subjectiveness and potential for bad feelings there. Now if someone gives a gift that is basically a "fuck you" to the recipient, that can be brought up as potentially disqualifying.
Someone whip up some art for this. Also, how about some art for a "Werewolf Master" badge for people who've hosted a game of Werewolf? Because that's going to happen.