Aquamarine
RasPiManiac

Adds Aquamarine ore, ingots, etc.

Magma
SuperStarSonic

Adds volcanoes, lava vents and new magma blocks

Strange Weapons
Robot10&Scheletor

Adds many strange and improbable weapons

Fareboxes and Faregates
1F616EMO

Signal-emitting fareboxes and faregates

Colored Sand
LoneSurvivr

Adds dyed variants for the default sand.

LWColorable
mt-mods

Various colorable decorative blocks.

Colored Meselamps
devurandom

Adds colored versions of meselamps, craftable with dyes

Gates (wider)
Sokomine

Wide gates for easy walking through and keeping cattle inside

Tree Particles
SuperStarSonic

Adds particles of falling leaves when you punch a tree

BitChange
Krock

Money items for your world. You can mine bitcoins. Sort of.

S Potions
Stakbox

Adds a simple potion brewing system for MTG. Includes API for adding custom potions.

Legendary Ore
DynamaxPikachu

Adds legendary ore and blocks

X Clay
SaKeL

Adds hardened clay.

3D Armor Mobile
LandarVargan

Adds a command to bring up a formspec that allows mobile users to put on armor

Claymore
GigaByte

adds a powerful sword capable of deforming the ground

Coconut Trees
Neuromancer

Adds coconut trees with edible coconuts & thatch blocks

My Default Lights
Don

Simple lights made from default material

Mesecons Stealthnodes
Clyde

Register your own Ghoststones.

Movement Essentials
Daniel

Adds umbrella for slow fall (hang gliders), consume mese crystal to recall (return to spawn), and throw fragments to teleport.

Mycorners
Don

Put decorative corners on blocks.

Travelnet Redo: Beacons
1F616EMO

Travelnet components in Telemosaic style

GC Gamemode
stellarorion

Easily switch between the survival and creative inventory

AIO - Back to Bed
degiel1982

Allow players to set their spawn points by right-clicking on beds.

My Treasure
Don

Adds treasure chests around the world

Nextgen Compass
StarNinjas

A compass item which points towards the world origin.

Hoverboard
mazes

Hoverboards

Handholds
Shara

Adds a climbing pick which creates handholds in stone, desert stone, sandstones and ice nodes.

Technic use Battery
1F616EMO

Use energy from RE batteries in the inventory

My Paint Extras
Don

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

Slot Machine Mini-games
mt-mods

Provides an "engine" to drive simple slot machines (includes two). Spins reels, takes in/pays out in Minegeld (Dan's currency mod), etc.

Rainbow Source
Shara

Adds coloured water.

Shears
Atlante

This mod adds a pair of shears to easily cut foliage, flowers, wool etc.

Ethereal: All-faces tree blocks
1F616EMO

All-faces tree block for Ethereal trees

Locks
Sokomine

Shared chests, doors, furnaces and signs - with keys

Vampire
sauvva

the player can become a vampire by drinking a potion

My Appearance
Don

Change Your Appearance

Better Ice
TheFanne

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

Balrog Sword
DragonWrangler

adds a balrog sword

Hbdrunk
UnchainedDevelopment

Adds intoxication effects and HUD bar to display intoxication level.

Mining Rework
JevFungus

Changes ore generation to be "nicer". More ore, in bigger clusters, much higher up. (mese blocks start at y = -100).