Some examples:-

• Spawns an end ship
• Rains random items from the sky
• Strikes all entities in 10 block radius with lightning
• Turns all surrounding stone blocks into random ores
• Drops a nuke from the sky with 20 seconds timer ( can be deactivated by attacking it)
• Spawns an immortal iron golem
• Elevate the land to the sky

Functions and Menus 

There's some admin only options to control the lucky block spawn rate or Anti lag settings .access it using /function command 

/function finder :- to locate all lucky blocks using beacon beam

• /function eraser :-. to clear all lucky blocks in loaded chunks
• /function settings :- opens the settings menu
• /function reset :- reset settings

settings 

spawn rates 

• Rate :- chance of lucky block spawning can be set between 0% to 200%
• Beacon :- emits a beacon beam from lucky block that lasts for 5 seconds after spawning the lucky block

Anti lag 

To prevent lag issues , items on the ground will be deleted every given amount of time 

• Despawn timer :- The amount of time before the item Despawns
• Warning timer :- The time before the notification appears (items on the ground will be deleted in 10 seconds )