An Erg Pot and three Wisps can be found in Area 2, just before the boss room, where the road splits. If the player goes straight towards the room with a tree instead of turning right, the Wisps will spawn. If the player breaks a wall at the back of this room, she can find an Erg Pot on a ledge.
Jumping from this ledge into the boss room incurs fall damage. However, if the player aims at the pillar closest to them (directly left from the ledge), the player can avoid fall damage by sliding down the pillar. This is a known source engine glitch.