The Grifolapines in the Polypore Dungeon have very good drops and give great experience, but they are not very challenging to kill and can be done without banking. Grifolapines are located on the third level of the dungeon -- consult a map for more information. Pick a location with three or more grifolapines. These monsters are scattered throughout the third level of the dungeon, and it does not matter how close or far it is from the entrance; all drops are either noted or stacked items.