Mineclone2 New Ores and Deepslate
Adds 30 new deepslate blocks!
Adds Copper Ore, blocks and items.
Placeable Buckets for Catching Rainwater
Allows empty buckets to be placed as nodes in order to collect rainwater.
Adds rope boxes of various lengths and also rope ladders.
Multiple Biome Generator
230 Pseudorandomly Generated Biomes, Trees, Fruits, Ores, Tools, and Liquids
A Particle-based Waterfalls/Lavafalls Mod
Portals and stuff
This combines several other mods that I consider a basic minimum starting point for worlds.
Adds many new biomes, plants, and scenery
Modifies ice so that it melts into water when broken, and will be melted by torches
Adds a recolourable plastic box. Fork of @cheapie's version with improvements.
My spin on decorative stuff.
You Can't Touch It Either
Simple mod adding lockable storage shelves to Nodecore.
Research N' Duplicate
Obtain and research enough of a specific item to unlock the ability to infinitely duplicate it.
Draw power from the world, and use it to power machines and tools.