This mod currently adds several different lego lightsabers to the game. Lightsabers are craftable with the use of a Lightsaber Builder out of Kyber Studs and Plastic Studs. Plastic Studs are crafted by smelting iron ingots into Plastic Alloy, which can then be arranged on a crafting table to make a stud. Kyber Studs are made using Kyber Essence, which drops from Kyber Ore blocks. Kyber Ore can be found anywhere from Y=1 to Y=50, with an average of one ore block per chunk. Lightsaber Builders are crafted using an enchantment table, a diamond, and seven Plastic Bricks, which are made with nine Plastic Alloy. JEI is strongly recommended for this mod, as many of the recipes can get confusing. See the images tab for Lightsaber Builder recipes, since they don't show up in JEI yet. (I'm working on it)
Lightsaber List:
Blue Lego Lightsaber
Green Lego Lightsaber
Purple Lego Lightsaber
Lego Darksaber
Kylo Ren Lego Lightsaber
Big thanks to benrulez.com for the lightsaber models.