Room of Requirement

Enchanted Loom [Steam Guide 2929892913]
Plants — Can be created by players in the Room of Requirement [Steam Guide 2929892913]
The Plight of the House-Elf [Steam Guide 2929892913]
Mandrake — Can be grown in Your Room [Steam Guide 2930840180]
Dittany — Can be grown in Your Room [Steam Guide 2930840180]
Chinese Chomping Cabbage — Can be grown in Your Room [Steam Guide 2930840180]
Venomous Tentacula — Can be grown in Your Room [Steam Guide 2930840180]
Desk of Description [Steam Guide 2930840180]
Potting Tables [Steam Guide 2956622193]
T-Shaped Potions Station [Steam Guide 2956622193]
Dung Composter [Steam Guide 2956622193]
Deek [Steam Guide 3381647976]

Moonstone — Dismantling default room furniture yields Moonstones [Steam Guide 2930840180]

Moonstone Rewards Deek Found here Mandrake Found here