Waterfalls
Termos

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

Columnia
mt-mods

Adds simple pillars and columns

Gates (wider)
Sokomine

Wide gates for easy walking through and keeping cattle inside

Angled Stairs
TumeniNodes

Adds angled stairs to the Minetest Game.

Colored Blocks
sermow

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

My Siding
Don

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

My Appliances
Don

A basic set of appliances

My Default Fences
Don

Adds more default fences

Stairs and slabs of wool
X-DE

Stairs and slabs of wool

Color Blocks
mt-mods

Contains colored building blocks.

Better Ice
TheFanne

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

My Chisel
Don

A chisel that allows you to shape blocks.

More Snow
Sokomine

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

Prefab Redo
cheapie

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

Stoneworks
TumeniNodes

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

My Wood Slopes
Don

Make slopes with wood blocks.

Colored Meselamps
devurandom

Adds colored versions of meselamps, craftable with dyes

Zughy32 colored blocks
MisterE

Plain colored blocks from the Zughy 32 palette.

My Default Glass
Don

Glass made from many default items

ColoredCement
Truemmerer

Add Cement Blocks with unifieddyes support

Blox
mt-mods

Adds lots of differently colored and textured blocks to Minetest.

My Default Lights
Don

Simple lights made from default material

Tables
AwesomeDragon97

A simple mod that adds decorative wooden tables.

My Mesh Nodes
Don

A machine that makes different shape node

Aquamarine
RasPiManiac

Adds Aquamarine ore, ingots, etc.

Floating Anchor
Starbeamrainbowlabs

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

Parcdeco
Floatland

adds grass-like nodes that have flowers

My Press
Don

A press to flatten steel

My Hole In The Wall
Don

Decorative blocks for around gardens and more

My Bricks
Don

Machine to make bricks out of common material

New Horizons
Hi_World

Adds 4 new biomes and TONS of new blocks!

My Flooring
Don

A basic set of flooring

Pink Lava
TenPlus1

Adds pink lava to certain depth of map with new mahogany obsidian block

Archaeology
SkyBuilder1717

Adds an looting and API in archaeologing

Embedded Lights
scr267

Decorative block embedded LED or Potlights

Stack Slabs
TumeniNodes

stackable slabs for Minetest

Legendary Ore
DynamaxPikachu

Adds legendary ore and blocks

Mycorners
Don

Put decorative corners on blocks.

WorldEdit Wall Block
SkyBuilder1717

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

Tac Nayn
GreenXenith

Adds Nyan Cat's evil twin, Tac Nayn (and a gray-scale rainbow).