More Coral
Nathan.S

Adds coral in more colors.

Noriel Sylvire's Minerals Core Modpack
Noriel_Sylvire

An API for automatically registering recipes, nodes and ore generation.

Floof
Momo

Add BicBiomeCraft inspired biomes, tools, and items.

Purple ore
X-DE

Adds new purple ore to floating islands and caves from height 200 to 31000.

treasures
ademant

Treasure nodes with useful items

Underground Survival Lighting
Arkatron

If you like underground light in survival, use this mod, it can help that.

Obdy
Sires

Adds some pretty OP tools :)

Mud
Blocky Player

Adds stylish mud blocks and even blocks you can walk through. Setup traps, secret rooms and much more!

Silver
Jackknife

adds silver ore and tools

Too many ores
TeufloV

This adds 53 new ores. But most of them are useless.