Renewable Resources are resources that can be recreated indefinitely. While running out of resources isn't likely to be a factor due to theoretically infinite (and still quite vast in practice) map generation, this is a list of resources that can produced over and over without having to explore for more.
The listed Fully Renewable Products are items which can be crafted or smelted using only renewable resources. Note that TNT and arrows are created from a combination of renewable and non-renewable resources (Sand and Flint).
Fully renewable resources
These resources do not require any nonrenewable items in order to be collected.
Resource
Renewable Products
Method
Saplings and Trees File:Grid Sapling.png File:Grid Sapling Spruce.png File:Grid Sapling Birch.png
File:Grid Wood.png File:Grid Wood (Pine).png File:Grid Wood (Birch).png File:Grid Wooden Plank.png File:Grid Stick.png File:Grid Ladders.png File:Grid Fence.png File:Grid Chest.png File:Grid Lever.png File:Grid Crafting Table.png File:Grid Bookshelf.png File:Grid Wooden Door.png File:Grid Trapdoor.png File:Grid Bow.png File:Grid Fishing Rod.png File:Grid Sign.png File:Grid Bowl.png File:Grid Painting.png File:Grid Boat.png File:Grid Wooden Stairs.png File:Grid Wooden Slab.png File:Grid Wooden Pressure Plate.png File:Grid Charcoal (Item).png File:Grid Torch.png File:Grid Bed.png File:Grid Wooden Sword.png File:Grid Wooden Shovel.png File:Grid Wooden Axe.png File:Grid Wooden Hoe.png
Trees can be grown from Saplings placed on lit Dirt ; breaking trees' Leaves drops saplings. See Tree farming . Charcoal can be produced by smelting any kind of log.
Wool File:Grid White Wool.png
File:Grid Light Gray Wool.png File:Grid Gray Wool.png File:Grid Black Wool.png File:Grid Brown Wool.png File:Grid Pink Wool.png File:Grid Green Wool.png File:Grid Lime Wool.png File:Grid Yellow Wool.png File:Grid Red Wool.png File:Grid Orange Wool.png File:Grid Painting.png File:Grid Bed.png
Obtained by shearing/killing Sheep , or by crafting 4 strings dropped by spiders . Six of the shown colors (white, light gray, gray, black, brown and pink) occur naturally in sheep; green, lime, red, orange and yellow wool require renewable dyes to produce.
Cobblestone File:Grid Cobblestone.png
File:Grid Stone.png File:Grid Lever.png File:Grid Stone Sword.png File:Grid Stone Shovel.png File:Grid Stone Axe.png File:Grid Stone Hoe.png File:Grid Stone Button.png File:Grid Stone Slab.png File:Grid Cobblestone Stairs.png File:Grid Cobblestone Slab.png File:Grid Furnace.png File:Grid Stone Brick.png File:Grid Stone Brick Stairs.png File:Grid Stone Brick Slab.png
Let flowing Lava meet Water . (One should take care not to let the water come into contact with the lava source block, which will extinguish the lava to make obsidian.)
Crops File:Grid Seeds.png
File:Grid Wheat.png File:Grid Bread.png File:Grid Cake.png
Harvesting Crops may produce Seeds , which may be used to produce more Crops. Must first be harvested from Tall Grass .
Sugar Canes File:Grid Sugar Cane.png
File:Grid Sugar.png File:Grid Paper.png File:Grid Bookshelf.png File:Grid Cake.png
Will grow to 3 blocks high and can be trimmed or replanted. Must first be found in the world.
Cacti
File:Grid Cactus Green.png File:Grid Lime Dye.png File:Grid Green Wool.png File:Grid Lime Wool.png
Will grow to 3 blocks high and can be trimmed or replanted. Must first be found in the world.
Melon File:Melonseeds.png
File:Melonslice.png File:Melon (Block).png
Seeds are found in Abandoned Mine Shafts . You can also get seeds from putting a melon slice in a crafting table.
Fish File:Grid Raw Fish.png
File:Grid Cooked Fish.png
Obtained by Fishing using a Fishing Rod .
Pork File:Grid Raw Porkchop.png
File:Grid Cooked Porkchop.png
Dropped by killed Pigs .
Cooked Porkchop File:Grid Cooked Porkchop.png
File:Grid Cooked Porkchop.png
Dropped by killing Pigs with Fire , killing Zombie Pigmen , or smelting raw porkchops.
However , Flint and Steel - a common and easy way to start fires (for burning pigs) - requires non-renewable Flint and Iron Ingots .
Leather File:Grid Leather.png
File:Grid Leather Cap.png File:Grid Leather Tunic.png File:Grid Leather Pants.png File:Grid Leather Boots.png
Dropped by killed Cows .
Feathers File:Grid Feather.png
File:Grid Feather.png
Dropped by killed Chickens and Zombies . Has no fully renewable crafting use.
Gunpowder File:Grid Gunpowder.png
File:Grid Gunpowder.png
Dropped by killed Creepers and Ghasts . Has no fully renewable crafting use.
Ink Sacs File:Grid Ink Sac.png
File:Grid Gray Dye.png File:Grid Light Gray Dye.png File:Grid Black Wool.png File:Grid Gray Wool.png File:Grid Light Gray Wool.png
Dropped by killed Squids .
Arrows File:Grid Arrow.png
File:Grid Arrow.png
Dropped by killed Skeletons . Has no crafting use.
Bones File:Grid Bone.png
File:Grid Bone Meal.png File:Grid Light Gray Dye.png File:Grid Gray Dye.png File:Grid Pink Dye.png File:Grid Lime Dye.png File:Grid White Wool.png File:Grid Light Gray Wool.png File:Grid Gray Wool.png File:Grid Pink Wool.png File:Grid Lime Wool.png
Dropped by killed Skeletons .
String File:Grid String.png
File:Grid White Wool.png File:Grid Bow.png File:Grid Fishing Rod.png
Dropped by killed Spiders .
Eggs File:Grid Egg.png
File:Grid Cake.png
Dropped randomly by living Chickens .
Snow File:Grid Snowball.png
File:Grid Snow (Block).png
Snow is produced by weather .
Slimeballs File:Grid Slimeball.png
File:Grid Slimeball.png
Dropped by killed Slimes . Has no fully renewable crafting use.
Mushrooms File:Grid Red Mushroom.png File:Grid Brown Mushroom.png
File:Grid Mushroom Stew.png
Spreads slowly on its own.
In 1.8 , when Bone Meal is used on Mushrooms and there is enough space for them to grow, then they will grow into Huge Mushrooms , which can be broken to get more Mushrooms.
Flowers File:Grid Dandelion.png File:Grid Rose.png
File:Grid Dandelion Yellow.png File:Grid Rose Red.png File:Grid Orange Dye.png File:Grid Pink Dye.png File:Grid Yellow Wool.png File:Grid Red Wool.png File:Grid Orange Wool.png File:Grid Pink Wool.png
Can occasionally spawn when Bone Meal is used to generate patches of Tall Grass .
Music Disc File:Grid Green Disc.png File:Grid Gold Disc.png
File:Grid Green Disc.png File:Grid Gold Disc.png
Get a skeleton to kill a creeper with its arrows. Has no crafting use.
Renewable, but require nonrenewable resources
These resources require a one-time craft of a nonrenewable item in order to be collected. The resource then can be collected infinite times.
Renewable at the expense of nonrenewable resources
These Resources gradually consume uses of non-renewable items when collected.