Piston

  3 wooden planks 4 cobblestone 1iron ingot 1 redstone
  IDK!
  4 wood planks 2 cobblestone 1 redstone

Dispenser

  1 bow 7 stone 1 redstone
  7 cobblestone 1 bow 1 redstone
  No idea

Dropper

  IDK
  Same as dispenser, but without bow
  No Effort

Trapped chest

  1 chest 1 lead
  1 chest 1 tripwire hook
  1 chest 1 redstone 1 TNT
  NO IDEA

Most durable pickaxe

  2 sticks 3 stone
  2 sticks 3 wood planks
  2 sticks 3 coal
  2 sticks 3 gold ingots
  2 sticks 3 iron ingots
  2 sticks 3 diamond blocks
  2 sticks 3 diamond

Opinion: Whats your favorite sword

  DIAMONDS, DUH!
  Gold
  Iron and you are with me
  Stone
  Wooden

How many obsidian do you at least need for the Nether Portal

  9
  14
  13
  10

How do you find strongholds

  Ender pearls
  Blaze powder
  All of the above
  IDK

Final: Cake

  IDK IDK IDK IDK IDK
  No Effort
  3 milk 3 wheat 2 sugar 1 egg
  3 wheat 3 milk 1 sugar 2 eggs