Block entity

A block entity is extra data associated with a block, beyond the finite set of block states associated with each block.

Usage
Block entities store additional information about certain blocks, with the type of information varying by block. In some cases, this information is used to create a more complex model, such as the book on an enchanting table. In other cases, it is used to store contents of an object. Blocks with block entities can be moved by pistons in Bedrock Edition, but not in Java Edition.

List of block entities
These are the current blocks that hold block entities.

Block entities and their render limits
Some block entities, or their effects, stop being rendered beyond a hard-coded block limit which is modeled after the radius of a sphere. This limit is not affected by the Render Distance nor the Entity Distance scale in the Video Settings.

Block entities that stop rendering beyond 64 blocks include:
 * s
 * s
 * es
 * s
 * s
 * Heads
 * s
 * s
 * s
 * s

Some effects related to block entities stop rendering beyond a number of blocks:
 * The beacon and end gateway beams stop rendering beyond 256 blocks or when the end gateway is out of frame.
 * The contents of a campfire stop rendering beyond 64 blocks.
 * The book on a lectern stops rendering beyond 64 blocks.
 * The mob inside a spawner stops spinning beyond the, which is 16 blocks by default, and stops rendering beyond 64 blocks.
 * The note particles emitted by a note block stop rendering beyond 32 blocks.
 * Pistons stop animating beyond 64 blocks.
 * The book on an enchanting table stops rendering beyond 64 blocks.
 * The outlines created by a structure block stop rendering beyond 96 blocks.
 * The bell part of the model of a bell, but not the frame, stops rendering beyond 64 blocks.