The severed finger of a serial killer makes a delightful
gift, especially when the finger comes to life and can be used to
detect who will be the next to die, or what the winning number of
the lottery will be. Whatever. Make from a small craft store
wooden box and other secret ingredients.
Also good for critters like dead mice and rats,
spiders, toads, etc. If you are making a potion, what better way
to enliven the proceedings than by having your dead critters come
back to life and caper about before being cut up and dumped into
the stew?