Hexadecimal Colours
erov

Adds nodes with colour palattes for each 3 character hex value like #fff

Colorable banisters
MatyasP

add support for colorable banisters and banisters with repeating nodebox

My Wood Slopes
Don

Make slopes with wood blocks.

Plastic Box
Starbeamrainbowlabs

Adds a recolourable plastic box. Fork of @cheapie's version with improvements.

Pizzas and cakes - pack 1
MatyasP

add some pizzas and cakes to 'pizzas'

My Dye
Don

More dye colors

Sundial
The4spaceconstants

Mostly game-independent sundial

Color Cubes
Wuzzy

This mod contains several colorful abstract blocks for decoration.

My Default Lights
Don

Simple lights made from default material

Japanese Signs
saradaabura

This will add signs that support Japanese to the game (Mineclonia).

My Cobble
Don

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

Prismatic Stone
doomburger

Adds decorative prismatic stone blocks, coral dyes, and six new crafting recipes.

TerraContent Base Library
AirplaneMan

Preferably use with it's dependents! Base Content/Library for my Minetest Game mods based on a certain 2D Sandbox Game

Node roads
MatyasP

Add much of one-node roads and crossroads, road bridges and slopes

My Bricks
Don

Machine to make bricks out of common material

Poly Decor
mt-mods

My spin on decorative stuff.

Quartz New
alerikaisattera

Quartz and quartz glass building blocks

Parcdeco
Floatland

adds grass-like nodes that have flowers

NodeCore Pottery
Winter94

Adds clay and ceramic items and nodes to NodeCore

Invisible Blocks
Truemmerer

Add invisible Blocks

Ethereal: All-faces tree blocks
1F616EMO

All-faces tree block for Ethereal trees

Pole Scaffolding
SFENCE

Craftable pole scaffoldings. Support default game and Hades Revisited game.

Impenetris
AirplaneMan

The hardest rock on all of the worlds (except for bedrock)

Template to Easily Make Fancy Voxelized Models
Noodlemire

Provides voxelmodel.obj, a model designed to be shaped by changing its texture, in order to easily create fancy voxelized models.

Minetest Emotions
ResendeTech

Adds new feelings in the form of blocks

Nameznik
MatyasP

Námezník / Fouling point marker, place where ends wide between tracks enough. For first, czech design.

NodeCore Vuga
Winter94

Generates Vuga Underground.

Colored Sand
LoneSurvivr

Adds dyed variants for the default sand.

Simple Models
AntumDeluge

Very simple models.

Color Blocks
mt-mods

Contains colored building blocks.

Bouncy Mushrooms
AirplaneMan

Adds Bouncy Mushrooms to MT

Autobuilder
limafresh

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

My Paths
Don

Dirt paths.

TerraContent Crimson
AirplaneMan

Introduces the Crimson to your worlds.

Saphire
Ryft77

Adds saphire stuff

My Blocks
Don

Special Blocks

Static compass
Sokomine

Compass block that can be placed and shows you where north is.

plots
bookgirl

plot world system inspired by PlotSquared for Luanti

Useful Contraptions
theFox

Some useful contraptions / machines.

Palisade
SFENCE

Add craftable palisades in many styles. Hades Revisited is supported.