Below is a guide on the location of the containers around Aetia Region in Xenoblade Chronicles 3.
Everblight Plain
Attack Stone
Tutorial near Torchlight Hill landmark
Nopon Coin (Silver) x2
Southeast of Riccalo Pond landmark
Pure Gemstone x4, Berserk Ring
West of Torchlight Hill landmark
Nopon Coin (Silver) x2
Northeast of Torchlight Hill landmark
Yzana Plains
Gemstone x2, Chrome Scarf
On mountain ledge southeast of Riccalo Pond landmark
Nopon Coin (Silver) x2
Overlooking lake southeast of Riccalo Pond landmark
Nopon Coin (Silver) x2
Colony 9 – On upper deck of ship
Tirkin Notebook, Gemstone
Colony 9 – On roof under ship
Nopon Coin (Silver) x2
Colony 9 – Near Commissary
Nopon coin (Silver) x2
Gemstone
Southeast of Colony 9 Front Gate
Harvest Necklace, Gemstone, Seafoam Soap
Gemstone x3, Fire-Flighting Hydrojet
West of Colony 9 Rear Gate along the map’s edge
Titanium Temple Guard, Pure Gemstone x3
Svinne Cavity – Southeast of Shark’s Jaws Cape landmark
Pure Gemstone x2
Sonata Saddleback – Northeast of Shark’s Jaws Cape landmark
Gemstone x4, Leather Gloves
Sonata Saddleback – Northeast of Colony 9
Alfeto Valley
Nopon Coin (Silver) x2
Nopon Coin (Silver) x2
Gemstone x2, Bronze Temple Guard
South of Loch Ciel and is guarded by an elite Lesser Volff
Beaknip Quill, Gemstone x2
In Hermit’s Alleyway south of Gura Flava Camp
Millick Meadows
Nopon Coin (Silver) x2
Near Kilmarris Highland
Gemstone x3
Murmur Rise – East of Kamos Guidepost landmark, climbable wall unlocked
Gemstone x4, Wing Necklace
Murmur Rise – To the far northeast of the Kamos Guidepost, guarded by Altruistic Maribel
Tirkin Notebook, Gemstone x3
Head northeast of Kamos Guidepost then northwest of the Altruistic Maribel unique enemy; jump down on rocks to reach it
Melnath’s Shoulder
Nopon Coin (Silver) x2
East of Loch Ciel landmark
Nopon Coin (Silver) x2
Colony Gamma – Southeast of the Gamma Canteen
Gemstone x3
Colony Gamma – In a storage container
Nopon Coin (Silver) x2
Colony Gamma – West of Back Way; need Scree Walking ability
Gemstone x5, Detector Headgear
Melnath’s Pass, Upper – East of Watchpoint Bridge guarded by Petrivore Judomar
Gemstone x3, Fire-Fighting Hydrojet
Transcendent Retreat – South of Coolley Pool Camp landmark
Gemstone x4, Wind Bracelet
Melanth’s Pass, Lower – Southeast of Gamma, Main Approach landmark (need Scree Walking ability)
Nopon Coin (Silver) x2
Coolley Lake – Just south of the Coolley Pool Camp
Captocorn Peak
Warped White Brooch, Pure Gemstone x3
Tsang Road – North of Tsang Camp rest spot
Seafoam Soap, Pure Gemstone x2
Nocclia Mire – Just west of the Nocclia Mire landmark
Nopon Coin (Silver) x2
Ladras Way – Just southwest of Ladras Camp landmark
Expanding Memory, Ultra Pure Gemstone x2
Cloudkeep – Just north of the Spoondrift Gate landmark
Circlet of Enlightenment, Ultra Pure Gemstone x2
Hall of the Serene – Just southwest of the Hall of the Serene landmark