these mods add weapons / armor / and ore.
evolution: adds an ore, an armor and two pickaxes (one of which is multitasking)
emerald: adds a utility to the emerald with armor and a powerful sword but difficult to have
ligt and darkness: add 2 armor and 2 sword including armor and sword quite easy to have and armor and sword a little more difficult to have.
nether drag and light: adds several materials, weapons and armor including an almost impossible to have.