Universal geometry realm
paramat

Create worlds of varying shapes

Badass Mech
Soundwavez

An addon that adds a badass mech, or “BAM” (this is a cool mech if the name is in any way confusing).

Cave Explorer
Hypernoot

An utility for cave exploring in creative

Simple Xray
MikeRedwood

Makes stone and desert stone see through, also works with nether mod

Map Tools
Calinou

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

Japanese_letters_modpack
ofg

Japanese hiragana blocks

More TNT
mittelmaessigercoder2

Adds more TNT

Modern Ish
thomasthespacefox

A collection of modern-ish odds and ends.

More Stones
Blocky Player

Provides a variety of educational and decorative minerals and rocks.

Pixelart
Linuxdirk

Nodes for pixelart grouped in color palettes

vexcazer
AiTechEye

Ultimate build+mine & admin tool

blackhole containment box
Soundwavez

cool swirvy gravitational blackhole boxes, that can be used to "ahnialate" enemy bases, or for "deforestation" aah i love abms! (extra dramatic!))

Infinite Chest
Dragonop

Adds a configurable chest that gives an infinite amount of something.

Cones: Traffic and Training Cones
ClassicAdam

Cones. Various use traffic cones and training cones. 3 sizes, 10 colors, 30 cones in total.

challenge
josegamestest

challenges to create route challenges or to train flight

Invisible Wall
X17

Adds a simple invisible block

Block In Block
TumeniNodes

A silly mod to spark creativity

tides & floods
Lemente

[WIP] [Warning: read full description] Adds the /sealevel command to rise/lower the sealevel.

Paintings Library
JoeEnderman

A simple paintings library for MTG and potentially others in future.

Node houses
MatyasP

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

Rainbow Source
Shara

Adds coloured water.

Ghost Block
Blocky Player

Adds blocks that you can walk through. Build traps, hidden rooms and more!

Floating Anchor
Starbeamrainbowlabs

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

Dyed Water
erov

Dyed water for mtg

WorldEdit Wall Block
SkyBuilder1717

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

MathPlot
kyleclaassen

A tool for constructing mathematical curves/surfaces/solids.

GC Gamemode
stellarorion

Easily switch between the survival and creative inventory

Blood Bane Sword
Blocky Player

OP sword for moderators. In memory of an old teacher, who had a mod similar to this on a private server.

Poly Decor
mt-mods

My spin on decorative stuff.

Drawstruct
Xenon

Draw or generate random structures

Math blocks
Giulio

Adds decorative math blocks to help in teaching