Castle Shields
FaceDeer

Adds decorative wall shields

Magma Conduits
FaceDeer

Removes default mapgen lava and adds widely-spaced vertical lava "veins".

Ropes
FaceDeer

Adds rope boxes of various lengths and also rope ladders.

Floating Anchor
Starbeamrainbowlabs

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

Castle Gates
FaceDeer

This is a mod all about creating castle gates and dungeons

Cement
Linuxdirk

A craftable and “makeable“ cement blocks for Minetest Game

TurtleMiner
BirgitLachner

A Mod to let Kids start programming with a turtle that can move around in the world, and dig and build what the user wants.

Mylandscaping
Nathan.S

Lets you put up decorative walls around your gardens, and make pretty hardscapes.

Boost Cart
Krock

This mod offers improved minecarts and a few more rail types.

Cannons
addi

Adds Cannons. Insert muni and gunpowder, and punch it with a torch. The muni can destroy nodes and hurts players.

Darkage - the original plus improvements
addi

DarkAge adds several new nodes and crafts to create a pre industrial landscape.

Facade
TumeniNodes

Adds decorative clay and stone-type nodes to Minetest Game.

C Doors
TumeniNodes

Adds centered doors and villa-style windows.

Rainbow Source
Shara

Adds coloured water.

Angled Walls
TumeniNodes

Angled & Sloped Walls, Angled Glass, & Angled Doors

Angled Stairs
TumeniNodes

Adds angled stairs to the Minetest Game.

Stoneworks
TumeniNodes

Stoneworks simply adds some fun, and cool building options.

ArtDeco
TumeniNodes

Just adds some new building blocks.

Nether
PilzAdam

Adds a deep underground realm with different mapgen that you can reach with obsidian portals.

Prefab Redo
cheapie

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

Streets
webdesigner97

Adds modern roads.

Castles++
philipbenr

This is a modpack all about creating castles and castle dungeons.

Vehicles
D00Med

A mod that adds an api for cars, planes, and other vehicles.

Unifiedbricks
wowiamdiamonds

This mod allows the user to re-color default bricks using Unified Dyes, and provides some pattern variations as well.

Simple Shooter
stu

First person shooter mod.

Quartz
Evergreen

Adds quartz ore and some decorative quartz blocks

Map Tools
Calinou

Adds various special versions of normal blocks, tools, and other map maintainer tools.

Flowerpot
sofar

A stylish flowerpot that can contain most plants.

Fancy Vend
ChimneySwift

A full-featured, fully-integrated vendor mod

Digtron
FaceDeer

Adds components for building modular tunnel boring machines

Gloop Blocks
mt-mods

Adds decorative and functional blocks, including cement, rainbow blocks, "evil" blocks, and tools.

GloopTest Pack
GloopMaster

Adds ores, tools, types of glass, a table to the game.

Plantlife
mt-mods

Adds various kinds of plants, fruit bushes, fallen trees, and a whole host of foliage and other ground cover.

Coloredwood
mt-mods

Colorize some wood!

Baked Clay
TenPlus1

Adds the ability to bake clay into blocks and colour them with dye.

Fireflies
Shara

Adds fireflies which can be caught in a net and placed in bottles for lighting.

Useful Contraptions
theFox

Some useful contraptions / machines.

Snowdrift
paramat

Light-weight weather mod with snow, rain, and clouds.

Working villages
theFox

A mod adding villager NPCs that are doing predefined work.

Halloween
GreenXenith

Adds Halloween candy and costumes.