Make some decoration items have some kind of actual function beyond visuals (possibly also more expensive to craft on some which have more useful functions).
This should be mentioned in the description, with no distracting tooltips appearing when highlighted.
Chests can only be accessed by players with permission to build in that area; to others they are nonfunctional decorations.
Unlike personal/club/officer chests, their inventories are not linked. Destroying a chest with contents still inside it places the contents in your inventory, or on the ground if you have no space.
Each section of a multipart chair can be sat on separately.
If plural, this means there are multiple sections or variants, all of which are affected.
Medieval Highlands
Fence Sections: Are not automatically climbed over
Wooden Stool: Sat on by pressing E
Posh Partition Sections: Are not automatically climbed over
Sword Rack: Opened by pressing E, has 2 slots for weapons only
Weapon Rack: Opened by pressing E, has 2 slots for weapons only
Shield Rack: Opened by pressing E, has 2 slots for hats/faces only
Stone-Sealed Sword: Opened by pressing E, has 1 slot for weapons only (possibly changes model based on whether a weapon is present or not?)
Sylvan Bed Head/Foot: Laid down in by pressing E (assembly required)
Golden Throne: Sat on by pressing E
Blue Couch - Left/Right Sections: Sat on by pressing E (assembly not required)
Comfy Green Armchair: Sat on by pressing E
Bench Sections: Sat on by pressing E (assembly not required)
Porcelain Throne: Sat on by pressing E
Dangling Doorbell: Rang by pressing E
Teak Trunk: Opened by pressing E, has 5 unrestricted inventory slots
Trash Can: Opened by pressing E, has 3 unrestricted inventory slots
Wheeling Wheelbarrow: Opened by pressing E, has 2 inventory slots for seeds or rich fertilizer only
Bounteous Barrel: Opened by pressing E, has 1 inventory slot for liquids only
Container Crate: Opened by pressing E, has 1 unrestricted inventory slot
Wrought Iron Fence Sections: Are not automatically climbed over
Desert Frontier
Masonry Fence Sections: Are not automatically climbed over
Saloon Door: Can change between solid/nonsolid by pressing E (possibly with a model rotation)
Frontier Bath Tub Right/Left Section: Can be climbed in by pressing E (assembly required)
Plain Piano: Generates a sound by pressing E
Grandiose Piano: Generates a sound by pressing E
Piano Seat - Left/Right Halves: Sat on by pressing E (assembly not required)
Grand Piano - Left/Right Halves: Generates a sound by pressing E (assembly not required)
Burgundy Bed Head/Foot: Laid down in by pressing E (assembly required)
Gramophone: Plays music by pressing E
Stack of Shapestone: Opened by pressing E, has 1 inventory slot for shapestone only
Stack of Formicite: Opened by pressing E, has 1 inventory slot for formicite only
Stack of Infinium: Opened by pressing E, has 1 inventory slot for infinium only
Ladder: Climbed rapidly by pressing and holding the jump button; releasing makes you fall
Grandfather Clock Face: Displays actual time when pressing E
Mine Cart: Opened by pressing E, has 3 inventory slots for ores only
Mine Cart Rails: Alternative mag rail track
Permafrost
Stormy Bed Head/Foot: Laid down in by pressing E (assembly required)
Ice Sleigh: Opened by pressing E, has 3 unrestricted inventory slots
Cursed Vale
Tombstones: Functions as signs
Four-Poster Bed Left Head/Foot/Canopy: Laid down in by pressing E (some assembly required; canopy and opposite side optional)
Dusky Bed Head/Foot: Laid down in by pressing E (assembly required)
Plum Bed Head/Foot: Laid down in by pressing E (assembly required)
Weird Wardrobe Top/Bottom Sections: Opened by pressing E, has 2 inventory slots for equipment only when separate, has 5 inventory slots for equipment only when assembled
Ashen Urn: Opened by pressing E, has 3 inventory slots for gem dust or faerie dust only
Bone Chair: Sat on by pressing E
Fae Wilds
Blue Bedroll: Laid down in by pressing E
Navy Bed Head/Foot: Laid down in by pressing E (assembly required)
Plain Fae Chair: Sat on by pressing E
Enchanted Stump Chair: Sat on by pressing E
Fancy Fae Chair: Sat on by pressing E
Fae Fence Sections: Are not automatically climbed over
Faerie Dust Vials: Opened by pressing E, has 2 inventory slots for gem dust or faerie dust only
Dragonfire Peaks
Dragonbone Throne: Sat on by pressing E
Charred Chest: Opened by pressing E, has 5 unrestricted inventory slots
Bag o' Cubits: Opened by pressing E, has 2 inventory slots for currency only
Pile of Gold: Opened by pressing E, has 1 inventory slot for currency only
Stalagmites: Triples fall damage
Neon City
Barrel of Toxic Waste: Opened by pressing E, has 1 inventory slot for liquids only
Rusted Barrel: Opened by pressing E, has 1 unrestricted inventory slot
Metallic Chair: Sat on by pressing E
Plasma Fences: Are not automatically climbed over, can be turned off alongside connecting sections by pressing E (with a model change?)
Blue Dot Light: Can be turned off by pressing E
Techno Torch: Can be turned off by pressing E
Standalone Neon Lamps: Can be turned off by pressing E
Neon Lamp Straight/End Sections: Can be turned off by pressing E alongside connecting straight/end sections of the same color
Disco Ball: Creates disco-style rainbow lighting by pressing E
Star Barstool: Sat on by pressing E
Chairomatics: Sat on by pressing E
Neon Katana Stands - Left/Middle/Right Sections: Opened by pressing E, has 1 inventory slot for weapons only (assembly required)
Robo-Beatbox: Plays music by pressing E
Cubic Speaker: Plays music by pressing E
Circadian Cadencer: Plays music by pressing E
Holo-Head Display: Functions as a sign
Encrypted Holotransmitter: Functions as a sign
Plain Metal Barrel: Opened by pressing E, has 1 unrestricted inventory slot
Terminal Base: Functions as a sign
Taiko Drum: Makes a noise when pressing E
Candoria
Candorian Bed Head/Foot: Laid down in by pressing E (assembly required)
Lovely Chair: Sat down in by pressing E
Cookie Chair: Sat down in by pressing E
Delicious Digital Clock: Displays actual time when pressing E
Exquisite Cuckoo Clock: Displays actual time when pressing E
Candorian Cabinet: Opened by pressing E, has 2 unrestricted inventory slots
Treasure Isles
Basilisk Base/Barrel/Muzzle: Fires a projectile when pressing E (assembly required) (nearby stack of cannonballs required)
Cornerstone Cannon: Fires a projectile when pressing E (nearby stack of cannonballs required)
Stack of Cannonballs: Allows nearby Cornerstone/Basilisk Cannons to shoot projectiles
Ship Railing: Is not automatically climbed over
Stylish Wooden Door Top/Bottom Sections: Can change between solid/nonsolid by pressing E (assembly required) (possibly with model rotation?)
Half-a-Hammock: Laid down in by pressing E (assembly required)
Lavish Admiralty Chair: Sat on by pressing E
Telescope: Allows much greater zooming and render distance when pressing E, albeit with 'tunnel vision'
World Cubes: Opens the world map, but with infinite scrolling permitted when pressing E
Cargo Crate: Opened by pressing E, has 1 unrestricted inventory slot
Solid Barrel: Opened by pressing E, has 1 unrestricted inventory slot
Topped-Off Treasure Chest: Opened by pressing E, has 5 inventory slots for currency only
Beach Chair: Sat on by pressing E
FIshing Chair: Sat on by pressing E, fishing permitted
Jurassic Jungle
N/A