New Horizons
Hi_World

Adds 4 new biomes and TONS of new blocks!

Autobuilder
limafresh

Adds a GUI for building cubes with customizable width, height, and length.

Better Fences (1F616EMO Redo)
1F616EMO

Allow fences to connect to all nodes

My Paths
Don

Dirt paths.

Lapis Lazuli
LNJ

Adds lapis lazuli ore, items and blocks.

My Ores
Don

Adds ores and minerals to Luanti

Colored Sand
LoneSurvivr

Adds dyed variants for the default sand.

Cube Nodes
Andrey01

Adds colorful blocks with various symbols as letters, digits, punctuation, emoji and special signs.

Parcdeco
Floatland

adds grass-like nodes that have flowers

Glostone Building Blocks
Wovado

Adds basic glostone-based building materials

Tinted Glass
1F616EMO

Colored glass

Zughy32 colored blocks
MisterE

Plain colored blocks from the Zughy 32 palette.

Explosion proof obsidian
Miner34

Adds an explosion proof obsidian.

Legendary Ore
DynamaxPikachu

Adds legendary ore and blocks

My Default Lights
Don

Simple lights made from default material

Quartz New
alerikaisattera

Quartz and quartz glass building blocks

My Cobble
Don

This is a simple mod that lets you turn cobble into gravel and gravel into sand

Tac Nayn
GreenXenith

Adds Nyan Cat's evil twin, Tac Nayn (and a gray-scale rainbow).

Tables
AwesomeDragon97

A simple mod that adds decorative wooden tables.

Pillars
citorva

Add a lot of pillars for fun.

My Parkour
Don

Nodes for making a parkour track

Colored Steel
cd2

Adds colored steel blocks.

More Ladders
SkyBuilder1717

Adds more ladders and sticks!!!

Tile Floors
ClassicAdam

Various colors of tile flooring in 16px and 256px res

My Siding
Don

Adds lines on one side of block to make it look like siding

Saphire
Ryft77

Adds saphire stuff

My Flooring
Don

A basic set of flooring

Kotatsu Tables
Piezo_

Adds a new piece of furniture based on Japanese kotatsu tables

Protector Redux
sorcerykid

An efficient and flexible node-based protection scheme for multiplayer worlds

My White Block
Don

a white block

Useful Contraptions
theFox

Some useful contraptions / machines.

Crafty Arts
AirplaneMan

Arts and crafts supplies

Plasterwork
Sokomine

Add colored plaster coats to nodes

My Bricks
Don

Machine to make bricks out of common material

Obdy
Sires

Adds some pretty OP tools :)

More Mese Post Lights!
1F616EMO

Add more mese post light

Color Blocks
mt-mods

Contains colored building blocks.

Dyeable Steel Blocks
nemokitty9

Allows Players to dye Steel for decorative blocks.

My Ladders
Don

Adds different ladders to the game

Invisible Blocks
Truemmerer

Add invisible Blocks