My Ores
Don

Adds ores and minerals to Luanti

My Press
Don

A press to flatten steel

Better Ice
TheFanne

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

My Slopes
Don

MySlopes

My Wood Slopes
Don

Make slopes with wood blocks.

Quartz New
alerikaisattera

Quartz and quartz glass building blocks

X Clay
SaKeL

Adds hardened clay.

Safe Chest
Atlante

Add a safe chest with secret password

Zughy32 colored blocks
MisterE

Plain colored blocks from the Zughy 32 palette.

Node roads
MatyasP

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

My Paths
Don

Dirt paths.

My Siding
Don

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

My Default Fences
Don

Adds more default fences

Colored Blocks
sermow

Different colors of: stone, stone bricks, wood obsidian, and glass

Roadway
X17

Adds simple roads in 4 sizes.

Ethereal Mosses
1F616EMO

More mosses for dirt types in Ethereal NG

Rainbow Source
Shara

Adds coloured water.

Embedded Lights
scr267

Decorative block embedded LED or Potlights

New Horizons
Hi_World

Adds 4 new biomes and TONS of new blocks!

Blox
mt-mods

Adds lots of differently colored and textured blocks to Minetest.

Stoneworks
TumeniNodes

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

Useful Contraptions
theFox

Some useful contraptions / machines.

Ethereal: All-faces tree blocks
1F616EMO

All-faces tree block for Ethereal trees

Kotatsu Tables
Piezo_

Adds a new piece of furniture based on Japanese kotatsu tables

ColoredCement
Truemmerer

Add Cement Blocks with unifieddyes support

Legendary Ore
DynamaxPikachu

Adds legendary ore and blocks

Tables
AwesomeDragon97

A simple mod that adds decorative wooden tables.

My Bricks
Don

Machine to make bricks out of common material

Color Blocks
mt-mods

Contains colored building blocks.

WorldEdit Wall Block
SkyBuilder1717

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

Floating Anchor
Starbeamrainbowlabs

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

My Mesh Nodes
Don

A machine that makes different shape node

Parcdeco
Floatland

adds grass-like nodes that have flowers

Cube Nodes
Andrey01

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

Plasterwork
Sokomine

Add colored plaster coats to nodes

Better Roads
DragonWrangler

allows players to make roads with less jagged edges

Mycorners
Don

Put decorative corners on blocks.

Tinted Glass
1F616EMO

Colored glass

Better Fences (1F616EMO Redo)
1F616EMO

Allow fences to connect to all nodes

TP Gate
AiTechEye

Teleport through the gate