Tree Chest
Trees that spawns with chests under them with loot table
Well
Old well, with surprise above glass
Tower
Never ending fire
Raft
They spawns on water biomes they have villager or undead
Azalea Pot
Spawns cauldron-like structures with Clay Pot with Azalea
Balloon
Flying structure in sky
Flower
Sometimes there can be flower above flowers
Jungle sit
Sit and relax in jungle
Witch Cauldron
Basically cauldron and around it spawns witches