These are my ideas for ways that seats could be implemented. Sitting on Stairs: This would allow players to sit on a stair block when it is right-clicked There's plenty of plugins out there for this already and I don't see why this hasn't been added so far. Sitting Command: An alternative to adding "Stair Chairs" could be a /sit command, which makes the player sit wherever they are. This would be more versatile than Stair Chairs, allowing people to sit anywhere they want to, whether it is under a tree, or by a fireplace. Although you would most likely have to write a custom plugin for this. If you can't find a plugin for Stair Chairs, you might as well go the extra mile with sitting, and add this instead.