Gates (wider)
Sokomine

Wide gates for easy walking through and keeping cattle inside

Quartz New
alerikaisattera

Quartz and quartz glass building blocks

Rainbow Source
Shara

Adds coloured water.

My Paint Extras
Don

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

Bunker Block
Spooks

Add blast proof concrete and its craft items.

More Snow
Sokomine

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

Blox
mt-mods

Adds lots of differently colored and textured blocks to Minetest.

Better Locks
SkyBuilder1717

Adds locks and locked doors

Embedded Lights
scr267

Decorative block embedded LED or Potlights

Aquamarine
RasPiManiac

Adds Aquamarine ore, ingots, etc.

Nodes for rails
MatyasP

Some nodes for building railways, primary for Advtrains railways.

Tables
AwesomeDragon97

A simple mod that adds decorative wooden tables.

My Press
Don

A press to flatten steel

My Default Fences
Don

Adds more default fences

My Hole In The Wall
Don

Decorative blocks for around gardens and more

Better Fences (1F616EMO Redo)
1F616EMO

Allow fences to connect to all nodes

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.

Color Blocks
mt-mods

Contains colored building blocks.

My Paths
Don

Dirt paths.

Ethereal: All-faces tree blocks
1F616EMO

All-faces tree block for Ethereal trees

Cube Nodes
Andrey01

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

Useful Contraptions
theFox

Some useful contraptions / machines.

Prefab Redo
cheapie

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

My Flooring
Don

A basic set of flooring

Kotatsu Tables
Piezo_

Adds a new piece of furniture based on Japanese kotatsu tables

Lapis Lazuli
LNJ

Adds lapis lazuli ore, items and blocks.

Better Ice
TheFanne

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

My Blocks
Don

Special Blocks

Maple tree
Duvalon

Adds a maple tree placed during world generation.

Floating Anchor
Starbeamrainbowlabs

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

Better Roads
DragonWrangler

allows players to make roads with less jagged edges

Falls
Just_Visiting

A Particle-based Waterfalls/Lavafalls Mod

Zughy32 colored blocks
MisterE

Plain colored blocks from the Zughy 32 palette.

Poly Decor
mt-mods

My spin on decorative stuff.

Glostone Building Blocks
Wovado

Adds basic glostone-based building materials

My Paint Wood
Don

Paint wood

My Stone Paths
Don

Stone paths

My Slopes
Don

MySlopes

My Chisel
Don

A chisel that allows you to shape blocks.