This page of the guide to Psychonauts 2 contains all the Supply Chests available in The Quarry location.
Six Supply Chests can be found in this level.
Chest No.
1
Location: Otto’s Laboratory.
You’ll come across this chest in Otto’s Laboratory.
You have to jump on the wooden platform to the left of the machine with brains.
Chest No.
2
Location: Motherlobe Area.
You’ll find the chest right below the facility.
Just jump off the edge and use levitation to get to the right place.
Chest No.
3
Location: Treehouse.
You’ll find the chest to the left of the tree house.
All you have to do is jump on the wooden platform.
Chest No.
4
Location: Lili’s Garden.
You have to use a boat get to this chest.
Leave it under a rock.
Then you’ll be able to climb up the tree without any problems.
