Painted 3D Armor
Adds banners to your armor, either painted using the painting mod or created using the banners mod
Tool to climb, double jump, and do good damage to mobs.
Hide nametag while sneaking, or invisible
A work-in-progress magic mod
Boots of Swiftness Mod
Adds a new pair of boots called the Boots of Swiftness.
Adds dark stuff
Draw power from the world, and use it to power machines and tools.
Adds bright stuff
Base Gameplay Modpack
This combines several other gameplay mods that I consider useful.