Generic fungus item-givers

There are a few generic Fungus item-givers. These all have pools with identical items.

The generic Fungus item-givers are:
 * Doom Marieke Doll
 * Mooshroom
 * Peridot Necklace

As of February 25th, 2019, all of the items in the pool are:
 * Creeping Fungus
 * Green Mushroom
 * Magic Mushrooms
 * Nutritious Mold
 * Red Mushroom
 * Shroom Of Doom