Steel bar blocks
sotha1

adds blocks made of steel bars (xpanes)

Node houses
MatyasP

Node houses is a mod by MatyasP that adds one-node block of houses, for crafting using items from mode default.

Stoneworks
TumeniNodes

Stoneworks simply adds some fun, and cool building options to Minetest.

Blox
mt-mods

Adds lots of differently colored and textured blocks to Minetest.

Columnia
mt-mods

Adds simple pillars and columns

Letters
Amaz

Adds a letter cutting tool with letter "signlike" nodes.

Ethereal: All-faces tree blocks
1F616EMO

All-faces tree block for Ethereal trees

Pillars
citorva

Add a lot of pillars for fun.

Palisade
SFENCE

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

Bin
Tomlaus

A bin to delete Items in Mineclone2 and Mineclonia.

My Ladders
Don

Adds different ladders to Luanti

My Default Lights
Don

Simple lights made from default material

Mesecons for Hades Revisited
SFENCE

Adds digital circuitry, including wires, buttons, lights, and even programmable controllers for Hades Revisited.

Steel
mt-mods

Adds a range of steel materials that are recyclable.

Breeze Blocks for Mineclonia
dougsouza26

Adds uniquely shaped colored blocks to Mineclonia.

My Mason Hammer
Don

A hammer to make stairs, ladders and footholds

Alien Tools
chaosomnium

Alien Tools Mod for Minetest - adds Alien Tool, Shield, biome, etc

Digilines Lightstone
1F616EMO

Digiline-controlled light-emitting colour blocks

Abritorch
mt-mods

multicolored torches

My Appliances
Don

A basic set of appliances

Diamond Arts
Teltalila

Adds decorational fake diamond blocks.

More Mese Post Lights!
1F616EMO

Add more mese post light

Lategame Amulets
Comet

Mine rare ore. Make amulets. Get tons of steel blocks. Build megastructures.

Aquamarine
RasPiManiac

Adds Aquamarine ore, ingots, etc.

Color Blocks
mt-mods

Contains colored building blocks.

Better Roads
DragonWrangler

allows players to make roads with less jagged edges

Metallicum
Ludus

The power of titanium

Archaeology
SkyBuilder1717

Adds an looting and API in archaeologing

Prefab Redo
cheapie

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

Better Ice
TheFanne

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

More Ladders
SkyBuilder1717

Adds more ladders and sticks!!!

Floating Anchor
Starbeamrainbowlabs

ExtraUtilities' Angel Block for Minecraft in Minetest! Place structures in mid-air with ease.

Stack Slabs
TumeniNodes

stackable slabs for Minetest

Weedstone Random Mod Thing
chaosomnium

Originally meant to be a simple electronics type mod inspired by redstones, I messed around with the code after getting bored and got this weird mod, and now it's this thing. Enjoy I guess?

Glostone Building Blocks
Wovado

Adds basic glostone-based building materials

Explosion proof obsidian
Miner34

Adds an explosion proof obsidian.

Saphire
Ryft77

Adds saphire stuff

Parcdeco
Floatland

adds grass-like nodes that have flowers

Tile Floors
ClassicAdam

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

Fire Braziers
Excalibur Zero

Fire braziers that cause flames to erupt one node above them that don't fade right away when are near flames or are punched.