I'd love a Halloween item that belonged to a Monster Girl... hopefully one of the once-awesome now-maligned ones like Medusa, a Harpy, etc.
The Harpy’s Creel: an ancient reed basket, interwoven with feathers from a very old and very large bird, perhaps from the Harpies themselves. Write the name of one who wronged you and their sin and put the writing in the basket. Leave it out until it rains, somewhere the water will pool in the bottom.
When the rain is over, retrieve the basket before the water is dry and reach into the puddle. The water will be surprisingly deep inside, and there will be something deep below the surface. Draw it out, and it will be your just recompense for the sin, something whole and useful and worth whatever pain was visited upon you.
A warning, though. Harpies deal in justice. This can not be used to punish someone who does not deserve it. If you try, you will draw something of your own from the water, something now ruined and beyond repair, payment for wasting their time.
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