All 70 Decorations In Horologium Chamber for get achievement “Decorator Extraordinaire”
Locations 1-10
Location: Mimosa Forest
2. Annabel’s Phone Case
Location: Reward for completing Blazing Annabel.
3. Stanbot Gamma Figure
Location: Reward for completing Apkallu 2 ½.
4. Stanbot Omega Figure
Location: Reward for completing The Return of Apkallu.
5. Shooting Star Replica
Location: Reward for completing Build the Shooting Star!.
6. Proto-Stinger
Location: Reward for completing Missing: Amanda and Diana?!.
7. Twin Dragon Bones
Location: Lesser Key of Shaula Lv. 1
8. Strange Mask
Location: Lesser Key of Regulus Lv. 1
9. Cursed Mask
Location: Lesser Key of Regulus Lv. 5
10. Pickled Plums
Location: Lesser Key of Ankaa Lv. 1
Locations 11-20
Location: Lesser Key of Canopus Lv. 1
12. Pitcher Plant
Location: Lesser Key of Mimosa Lv. 1
13. Wild Hunt T-Shirt
Location: Lesser Key of Ankaa Lv. 7
14. Wild Hunt Poster A
Location: Lesser Key of Ankaa Lv. 3
15. Wild Hunt Poster B
Location: Lesser Key of Ankaa Lv. 4 and Mount Ankaa
16. Medieval Spear
Location: Lesser Key of Pollux Lv. 1
17. Medieval Shield
Location: Lesser Key of Pollux Lv. 2
18. Whisk
Location: Lesser Key of Canopus Lv. 2
19. Happy Mask
Location: Lesser Key of Regulus Lv. 6
20. Mouth Sculpture
Location: Regulus Mines
Locations 21-30
Location: Lesser Key of Pollux Lv. 3
22. Shroom Doll
Location: Lesser Key of Mimosa Lv. 2
23. Magic Experiment Gear
Location: Part of the Lotte’s Séance Event
24. Magic Microscope
Location: Lesser Key of Canopus Lv. 3
25. Thorn Helm
Location: Lesser Key of Pollux Lv. 4
26. Table Mirror
Location: Part of the Lotte’s Séance Event
27. Candlestick
Location: Lesser Key of Regulus Lv. 2
28. Lizardman Specimen
Location: Lesser Key of Ankaa Lv. 5
29. Halberd
Location: Lesser Key of Pollux Lv. 5
30. Lizard Bones
Location: Lesser Key of Shaula Lv. 2
Locations 31-40
Location: Lesser Key of Shaula Lv. 3
32. Crystal Skull
Location: Lesser Key of Shaula Lv. 4
33. Medieval Helm
Location: Lesser Key of Pollux Lv. 6
34. Minotaur Skull
Location: Lesser Key of Shaula Lv. 5
35. Electric Hot Plate
Location: Lesser Key of Canopus Lv. 4
36. Mineral Water
Location: Lesser Key of Gienah Lv. 1
37. Apkallu Poster
Location: Lesser Key of Gienah Lv. 2
38. Apkallu 2 Poster
Location: Lesser Key of Gienah Lv. 3
39. Food Processor
Location: Lesser Key of Canopus Lv. 5
40. Starry-Eyed Mystery
Location: Lesser Key of Gienah Lv. 4
Locations 41-50
Location: Lesser Key of Gienah Lv. 5
42. Celestial Orb
Location: Lesser Key of Canopus Lv. 6 and Canopus Ruins
43. Mandragora
Location: Lesser Key of Mimosa Lv. 3
44. Boot Hat
Location: Lesser Key of Gienah Lv. 6
45. Yesterday’s Catch
Location: Lesser Key of Gienah Lv. 7
46. Cockatrice Feather (NOT TO BE CONFUSED WITH AN ANOTHER ITEM ALSO CALLED COCKATRICE FEATHER)
Location: Lesser Key of Mimosa Lv. 4
47. Venus Flytrap
Location: Lesser Key of Mimosa Lv. 5
48. Golden Statue
Location: Lesser Key of Shaula Lv. 6
49. Telescope
Location: Lesser Key of Canopus Lv. 7
50. Mysterious Lamp
Location: Lesser Key of Ankaa Lv. 6
Locations 51-60
Location: Lesser Key of Mimosa Lv. 6 and Shaula Lv. 6
52. Iron Maiden
Location: Lesser Key of Pollux Lv. 7
53. Devil’s Hand
Location: Lesser Key of Ankaa Lv. 2
54. Vampire Coffin
Location: This is the only decoration I couldn’t locate, mainly because I never noticed I had it until it was too late. I’m going to assume you get this decoration as you complete the story, however that’s just what I suspect since it’s not in any of the Lesser Keys. Sorry, I know this isn’t helpful.
55. Trash Can
Location: Part of the Lotte’s Séance Event
56. Decorative Plant
Location: Lesser Key of Mimosa Lv. 7
57. Ancient Dragon Papers
Location: Gienah Tundra
58. Strange Mirror
Location: Part of the Lotte’s Séance Event
59. Questionable Statuette
Location: Part of the Lotte’s Séance Event
60. Cannon
Location: Part of the Lotte’s Séance Event
Locations 61-70
Location: Lesser Key of Shaula Lv. 7
62. Microphone
Location: Part of the Wangari Ahoy! Event
63. Beginning Flight Magic
Location: Lesser Key of Regulus Lv. 3
64. Tea set
Location: Lesser Key of Regulus Lv. 4
65. Shiny Chariot Poster
Location: Lesser Key of Regulus Lv. 7
66. Teddy Bear
Location: Shaula Desert
67. Sword of Canopus
Location: Lesser Key of Canopus Lv. 2, 3 and 7 (Though I’m pretty sure this drops on all Levels)
68. Antique Plate
Location: Part of the Lotte’s Séance Event
69. Strange Notebook
Location: Reward for completing Priscila’s Wonders.
70. Microcar
Location: Labyrinth of Pollux