Amulets with symbols of misfortune (like black cats, broken mirrors, etc.) that are designed to "draw" bad luck. These could be worn as a necklace or kept somewhere personal as a playful "ward
A set of dark crystals (like black tourmaline, smoky quartz) associated with absorbing and channeling negative energy. Each crystal could be "infused" with a different type of misfortune (financial ruin, heartache, etc.).