I have added 372 new items so far that are 2x2, 4x4, and 8x8 walls/floors.

Putting a block in each corner of the crafting grid create a 2x2 wal version of the item. Putting 2x2 walls in the corners makes 4x4 walls and putting those in the corners makes 8x8 walls. placing a single wall on the crafting grid will break it down into what it once was. While sneaking (Holding shift) you can place floors.

You can hold 16 of the 2x2, 4 of the 4x4 and 1 of the 8x8 per inventory slot so this does not increase carrying capacity.

Wall placement is designed to extend the face of the block it was placed on and then go up if it is the top or bottom face then it tries to match your facing direction. Floors tend to go toward you or to the left. If ALL blocks can't be placed nothing happens.

I have only done this to block that don't have a facing direction so it does not include hay, quartz pillars, logs, pistons , etc. I also left out blocks with gravity.

It works for following blocks: Dirt, Bedrock, Cobblestone, Moss Stone, Obsidian, Clay, Bricks, Jukebox, Note Block, Redstone Lamp, Cobblestone Wall, Mossy Cobblestone Wall, Fence, Fence Gate, Nether Brick Fence, Iron Bars, Ice, Packed Ice, Snow, Stone, Stone Bricks, Mossy Stone Bricks, Cracked Stone Bricks, Chiseled Stone Bricks, Sandstone, Chiseled Sandstone, Smooth Sandstone, Redstone Ore, Coal Ore, Lapis Lazuli Ore, Iron Ore, Emerald Ore, Diamond Ore, Gold Ore, Nether Quartz Ore, Block of Gold, Block of Redstone, Block of Coal, Lapis Lazuli Block, Block of Iron, Block of Emerald, Block of Diamond, Glowstone, Netherrack, Nether Brick, Soul Sand, Block of Quartz, Chiseled Quartz Block, Sponge, Crafting Table, Bookshelf, Glass, White Stained Glass, Orange Stained Glass, Magenta Stained Glass, Light Blue Stained Glass, Yellow Stained Glass, Lime Stained Glass, Pink Stained Glass, Gray Stained Glass, Light Gray Stained Glass, Cyan Stained Glass, Purple Stained Glass, Blue Stained Glass, Brown Stained Glass, Green Stained Glass, Red Stained Glass, Black Stained Glass, Glass Pane, White Stained Glass Pane, Orange Stained Glass Pane, Magenta Stained Glass Pane, Light Blue Stained Glass Pane, Yellow Stained Glass Pane, Lime Stained Glass Pane, Pink Stained Glass Pane, Gray Stained Glass Pane, Light Gray Stained Glass Pane, Cyan Stained Glass Pane, Purple Stained Glass Pane, Blue Stained Glass Pane, Brown Stained Glass Pane, Green Stained Glass Pane, Red Stained Glass Pane, Black Stained Glass Pane, Hardened Clay, White Stained Clay, Orange Stained Clay, Magenta Stained Clay, Light Blue Stained Clay, Yellow Stained Clay, Lime Stained Clay, Pink Stained Clay, Gray Stained Clay, Light Gray Stained Clay, Cyan Stained Clay, Purple Stained Clay, Blue Stained Clay, Brown Stained Clay, Green Stained Clay, Red Stained Clay, Black Stained Clay, Wool, Orange Wool, Magenta Wool, Light Blue Wool, Yellow Wool, Lime Wool, Pink Wool, Gray Wool, Light Gray Wool, Cyan Wool, Purple Wool, Blue Wool, Brown Wool, Green Wool, Red Wool, Black Wool, Oak Wood Planks, Spruce Wood Planks, Birch Wood Planks, Jungle Wood Planks, Acacia Wood Planks, Dark Oak Wood Planks.

Pre-fab walls