Utilities for Underch - extension pack
Hume2

Extend the Underground Challenge by miscelaneous utilities and change some recipes

Poly Decor
PolySaken

My spin on decorative stuff.

Gizmo's Of Carbon Machinations
ThatGhzGamer

Adds various charcoal related items such as a Marvelous Hammer to Compress things, New Gear, New Diamonds, Charcoal and Willow Charcoal.

Dye Mixer
LRV

This mod removes the mixes of dyes and the crafting recipes that allow you to dye wool and make them craftable in the Dye Mixer.

Macro Crafting Manager
sorcerykid

Macro Crafting Manager provides a streamlined drag-and-drop interface for dividing and arranging item stacks within the craft-grid

Ocular Networks
PolySaken

Draw power from the world, and use it to power machines and tools.

Trucraft
PolySaken

An alternative crafting system done entirely in the world.

Darks
_Xenon

Adds dark stuff

Symmetric Crafts
louisroyer

Add vertical symmetry in crafts.

Sticks Stones
MikeRedwood

Makes Sticks from leaves and scatters small stones

Online Craftguide
LMD

Generates a static craftguide website

Burnable Diamonds
Hume2

Make diamonds useable as fuel

Brights
_Xenon

Adds bright stuff

Biofuel for Hades Revisited
SFENCE

Produce biofuel from unused plants.

Lock Workshop
LRV

This mod removes the crafts for locked and shared nodes and makes them craftable in the lock workshop via their unlocked/locked counterpart and a lock.

Base Gameplay Modpack
karlexceed

This combines several other gameplay mods that I consider useful.