Below are all/most of the drops that are obtained from lucky blocks. They can either be helpful, harmful or neutral.
(sorry if I forget some or don't list them please pm me ones I do miss)
Colour Code
Blessed, Normal and Crazy
Normal and Crazy
Just Crazy
Wands
~TNT Wand~
Shoot a block of TNT that will explode at the target you aim at.
~Regen Wand~
Heals you at the click of a button.
~Slime Wand~
Throw a slime at an enemy, but be aware these cubed creatures can turn on you.
~Shield Wand~
Summon a dome of ice around you to protect you and save you from falling.
~Dragon Breath Wand~
Summon a path of fire in front of you that will actually make your opponent stop in their tracks.
~Splash Potion Wand~
Throw a random potion, can be helpful or harmful, remember this is a game of luck.
~Frost Path Wand~
Summon a path of ice that will make you the next Elsa. Escape your enemy or bridge without the fear of being shot off.
~Invisibility Wand~
Turns you invisible, however, it's just you, not your armour. Be careful trying to sneak up on opponents with armour.
Bows and Such
~Explosive Bow~
Create an explosion where your arrow hits.
~Automatic Bow~
Shoot up to 20 arrows before a break to charge up.
~Frozen Shot Bow~
Trap your opponent in ice to either get close or escape.
~Shotgun Bow~
Shoot five arrows all at different angles.
~Normal Bow~
Get up to 12 arrows, normal or spectral and tipped.
~Grappling Hook Bow~
Shoot towards your preferred target then punch to get pulled towards it.
Animals and Mobs
~Armoured Zombie~
Spawn a zombie with random armour.
~Villager Tower~
Spawns several villagers riding each other with 32 emeralds to trade.
~Pig~
Spawns in a pig with a carrot on a stick and saddle to ride into battle
~Just a normal Pig~
A sneaky pig that turns into the Pig King if punched, Pig King spawns in baby pigman that explode.
~Blaze~
Spawns in a blaze that drops a fire aspect blaze rod upon death.
~Chickens~
Spawns in 9 chickens, occasionally having one upside down.
~Pets~
Spawns in a Wolf or Cat that are tamed, which you can rename.
~Frosty~
Spawns a snowman in that will protect you by shooting snowballs at opponents.
~Enderman~
Spawns Enderman that is holding onto a chest that is dropped upon death.
~Witch~
Spawns a witch riding a bat that will fly around throwing potions.
~Knight~
The boss mob that has a poison effect. Will shield at points to prevent you from hitting it. Drops 4 lucky Blocks, occasionally drops armour and sword.
~Shulker~
Shulker will spawn where the lucky Block was broken, it will continue to hit you with their projectiles, this will land a nasty blow and give you levitation to float around.
~Spawn Eggs~
A random assortment of eggs will appear, hostile or friendly.
~Exploding Squid~
A squid will appear with a number above its head. Take cover or you might receive some nasty effects(Slowness + Blindness)
~Silver Fish~
Silverfish will spawn with a highlighted effect. Kill them to receive one iron per fish.
Tools and Weapons
~Diamond Sword~
Pretty basic, a few particles swirl down to reveal your diamond sword.
~Fire Sword~
An iron sword that, when clicked, shoots a ray of fire particles hitting whoever is in front of it.
~Knock Back Sword~
A wooden sword that has Knockback Two, breaks after a few uses.
~Stone Sword~
Stone Sword with varying enchants from Sharpness one to three.
~Set of tools~
An axe, pickaxe, and shovel in either stone or iron are dropped.
~Diamond Pickaxe~
A nice diamond pickaxe :)
~Shield(only on 1.9+)~
Gives you a shield to deflect arrows.
Traps
~3x3 Hole~
A hole start disappearing below you into the void
~Exploding Chest~
A chest that explodes upon opening.
~Pressure Plate~
This item can either give you something good or something bad, ranging from golden apples to fire explosions.
~Cage Trap~
Gives you a pressure plate where if someone steps onto it, it traps them.
~Lucky Block Trap~
Place this block and let an unexpecting victim come and open it, they'll get an explosion in the face.
~Zombie Cage~
Puts you into a glass cage with a zombie
Minerals and Ores
~Iron Block~
Spawns a lightning bolt along with an Iron Block
~Obsidian~
Spawns obsidian shooting up and landing around you.
~Ores~
Spawns an iron pickaxe and diamond, gold, iron ores for you to mine.
~Craft Fast~
A crafting table with materials spawn, ranging from iron to gold to even diamonds.
Transport
~Blocks~
Spawns in either stone, dirt, or sandstone to help you build to your new destination.
~Ender Pearls~
Teleport anywhere within reach at the click of a button.
~Elytra(only on 1.9+)~
Glide around with your new elytra.
~Chorus Fruit(only on 1.9+)~
A block of end stone appears and from that, a chorus plant appears. Allows you to teleport a few blocks away
Other
~Food~
Drops a few bread, carrots or apples.
~Potions~
Gives five potions, 2 poison, one harming, one regen, and one speed.
~Water~
Spawns a water source block.
~Lava~
Spawns a lava source block.
~Speed Potion~
Gives a player extreme speed that if running gives them the potential to run off the island.
~Armour Stand~
Spawn an armour stand with random armour or leather armour with a pumpkin/lucky block head.
~Chest~
A chest that may contain tools, food, blocks or other materials.
~Enchantment Table~
Spawns an enchantment table with XP and lapis.
~Archer Tower~
Spawns a stone tower that allows you to shoot from a peak.
~Melon Tower~
Melon tower with a melon staircase that leads you up to a lucky block.
~Hot Potato~
Once thrown, it explodes where it lands.
~Beacon~
Spawns a beacon with a single gold to activate.
~Tracking Compass~
The compass that has the ability to locate the nearest player.
~Farm~
Spawns a 5x5 farm that provides carrots/potatoes and wood.
~Cake~
Cake spawns in one piece at a time, eat it while it's spawning to regen hunger and still have a full cake in the end.
~Dispensers~
A dispenser, lever, and fireballs, what could go wrong?
~Corrupted Vision~
You will receive blindness for a few seconds, however normal blocks around you will appear as lucky blocks, these blocks will not grant you any drops, however.
~Suddenly You Feel Ill~
You will receive nausea for eight seconds with the words 'Suddenly you feel ill' across your screen.
~Tree~
A random type of tree will spawn along with an axe.
