Well there are a lot of ideas I’ve never bothered to share on the forums cause the developers have enough ideas and stuff to read through. I don’t know if these are unique enough for what you’re talking about but these are just some ideas I’ve thought up over the years of playing the game. These could all be things that are rewarded to those who play in certain events that the developers run, like the Halloween event, and can craft them whenever the event starts or the event specific crafting materials are available to farm up.
Glow sticks
Basically a throwable light source that comes in two forms, sticky and non-sticky. Since bombs can bounce off stuff and have physics, this means you could drop them through holes, throw them through cave systems, etc. They would either bounce off stuff or stick depending on which version. They would have color based on gleam or gems that they are made out of. Gem versions have a larger light source than gleam but are basically a consumable item similar to food and brews.
Blueprints
Basically taking any structure you’ve made and create a blueprint out of it to sell to someone else. It would require that person to have the same blocks that are within the blueprint. This could work for things like statues to be placed quickly in people’s settlements. The blueprint would have a player only specific telegraph that allows them to place it where they want to place it, kind of like the Plotter tool, and with a click you apply the blocks of the blueprint. After that the blueprint is consumed or takes a durability hit (like 1 point out of 10).
Boomerang
Another weapon type that has a decent range. Kind of like the Boomerang in Zelda games and functions the same way in being able to stun creatures for a short amount of time but after so many applications of the effect it becomes immune for 30 seconds. Would help with group hunting events and solo hunting. The boomerang would return to the player regardless of where they are standing from where they originally used it. Line of sight could be an issue or not depending on how it’s balanced. Other stats of the weapon are kind of up to balance passes on it.
Flare Gun
Kind of like the glow stick idea but lasts longer and uses elemental fusion (cause it doesn’t have a crafting recipe). It would use titanium and gems in its crafting and the gem is what determines the color of the flare. The light source of the flared area would be huge and last for 10-15 minutes (maybe?). Basically is just a supportive item, sort of like grapples are.
Functional Furniture
All existing furniture becomes functional. So chairs you can actually interact with and sit down on. Tables that can function as tables. Desks that can store a small amount of stuff in them if you’re sitting at it.
Chest storage
Alternative storage for players besides Storage Shelves, Blocks, Shop Stands, Crafting Tables and Machines. Could come in a variety of different slot sizes and appearances.
Paintings
This is a pretty interesting idea. This could be incorporated into other areas of the game besides building and that’s also the economy mini game. The idea would allow you as a player to actually paint something on a canvas and create an actual painting in the game. It would require an interface for this to work but it would definitely be an interesting part of the game. I’d personally spend a lot of coin on a player made painting if it was good and fit with what I need it for.
Snowball Machine
Finally be able to use Ice and Glacier blocks to turn into a throwable item at other players. Minecraft had this and it was kind of nice. I think the entire concept behind it could spark a whole set of events, such as paint ball arenas in the game. Fun little events that players can hold would be nice.
Armor and Weapon Racks
A decorative item that you can place stuff on, such as wearable items (when they’re in the game) and weapons or tools. It could make a barracks room in a castle or fortress look really nice or even a guard barracks in a settlement have more artistic appeal towards it.
Just some thoughts. I don’t know if there’s any merits to any of it but I figured I’d share them anyways.