Better Roads
DragonWrangler

allows players to make roads with less jagged edges

My Slopes
Don

MySlopes

My Paint Extras
Don

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

My Workshop
Don

Workshop benches

Better Ice
TheFanne

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

ColoredCement
Truemmerer

Add Cement Blocks with unifieddyes support

My Fences
Don

Adds nice looking fences.

My Default Glass
Don

Glass made from many default items

Embedded Lights
scr267

Decorative block embedded LED or Potlights

Rainbow Source
Shara

Adds coloured water.

My Default Lights
Don

Simple lights made from default material

Archaeology
SkyBuilder1717

Adds an looting and API in archaeologing

Better Locks
SkyBuilder1717

Adds locks and locked doors

Nodes for rails
MatyasP

Some nodes for building railways, primary for Advtrains railways.

Columnia
mt-mods

Adds simple pillars and columns

Colored Blocks
sermow

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

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.

Kotatsu Tables
Piezo_

Adds a new piece of furniture based on Japanese kotatsu tables

Zughy32 colored blocks
MisterE

Plain colored blocks from the Zughy 32 palette.

Quartz New
alerikaisattera

Quartz and quartz glass building blocks

Node houses
MatyasP

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

Ethereal Mosses
1F616EMO

More mosses for dirt types in Ethereal NG

My Press
Don

A press to flatten steel

My Siding
Don

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

My Paths
Don

Dirt paths.

My Mesh Nodes
Don

A machine that makes different shape node

My Wood Slopes
Don

Make slopes with wood blocks.

My Default Fences
Don

Adds more default fences

Brick Walls
philipmi

Adds brick walls from different types of bricks.

Tables
AwesomeDragon97

A simple mod that adds decorative wooden tables.

My Flooring
Don

A basic set of flooring

Poly Decor
mt-mods

My spin on decorative stuff.

WorldEdit Wall Block
SkyBuilder1717

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

Ethereal: All-faces tree blocks
1F616EMO

All-faces tree block for Ethereal trees

My Cobble
Don

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

Blox
mt-mods

Adds lots of differently colored and textured blocks to Minetest.

Prefab Redo
cheapie

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

Cube Nodes
Andrey01

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

Colored Sand
LoneSurvivr

Adds dyed variants for the default sand.