My Parkour
Don

Nodes for making a parkour track

Embedded Lights
scr267

Decorative block embedded LED or Potlights

Stairs and slabs of wool
X-DE

Stairs and slabs of wool

Pillars
citorva

Add a lot of pillars for fun.

My Cobble
Don

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

Falls
Just_Visiting

A Particle-based Waterfalls/Lavafalls Mod

Prefab Redo
cheapie

Cheapie's version of Dan's old prefab mod, which adds pre-fabricated concrete elements: catwalks, benches, ladders, railings...

My Paint Wood
Don

Paint wood

Waterfalls
Termos

Adds water erosion, so flowing water forms somewhat more realistic looking waterfalls.

X Clay
SaKeL

Adds hardened clay.

My Siding
Don

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

My White Block
Don

a white block

Steel bar blocks
atum785

adds blocks made of steel bars (xpanes)

Angled Stairs
TumeniNodes

Adds angled stairs to the Minetest Game.

Colored Sand
LoneSurvivr

Adds dyed variants for the default sand.

Nodes for rails
MatyasP

Some nodes for building railways, primary for Advtrains railways.

My Paint Extras
Don

Allows you to paint dirt, gravel, wood, trees and more.

Ethereal: All-faces tree blocks
1F616EMO

All-faces tree block for Ethereal trees

My Blocks
Don

Special Blocks

Zughy32 colored blocks
MisterE

Plain colored blocks from the Zughy 32 palette.

Tile Floors
ClassicAdam

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

Tinted Glass
1F616EMO

Colored glass

Columnia
mt-mods

Adds simple pillars and columns

Gates (wider)
Sokomine

Wide gates for easy walking through and keeping cattle inside

My Wood Slopes
Don

Make slopes with wood blocks.

Parcdeco
Floatland

adds grass-like nodes that have flowers

More Snow
Sokomine

snow and wool for stairs - nicer winter landscape and snow-covered roofs

My Paths
Don

Dirt paths.

XConnected
Sokomine

connected nodes like xpanes, xfences, walls

Color Blocks
mt-mods

Contains colored building blocks.

WorldEdit Wall Block
SkyBuilder1717

Adds block and item for making big structures easily as possible.

New Horizons
Hi_World

Adds 4 new biomes and TONS of new blocks!

Stoneworks
TumeniNodes

Stoneworks simply adds some fun, and cool building options.

Ethereal Mosses
1F616EMO

More mosses for dirt types in Ethereal NG

Dyeable Steel Blocks
nemokitty9

Allows Players to dye Steel for decorative blocks.

Lapis Lazuli
LNJ

Adds lapis lazuli ore, items and blocks.

Saphire
Ryft77

Adds saphire stuff

Better Ice
TheFanne

Modifies ice so that it melts into water when broken, and will be melted by torches

Useful Contraptions
theFox

Some useful contraptions / machines.

Glostone Building Blocks
Wovado

Adds basic glostone-based building materials