Ghost Blocks -

Use them to hide doors or create fake walls that players can walk right through.

You can summon a falling_block entity that stays in place. Use the command: /summon falling_block ~ ~ ~ {Time:1b, NoGravity:1b, BlockState:{Name:"minecraft:stone"}} Note: To make them permanent, use a repeating command block to constantly reset the Time tag to 1 . Ghost Blocks

In survival mode, standing on scaffolding and rapidly right-clicking to place more downwards can occasionally leave a single floating scaffolding block that is visible to you but not to others, allowing you to "fly". Use them to hide doors or create fake