Lanterns could be a new lighting system that can be placed or carried. It shines light on 6 blocks in every direction. Carrying them can be useful for exploring dark caves or at night. The crafting recipe could be glowstone with one glass on both sides, plus a wood plank on the bottom and top.
I dont think lanterns would be something 4J would add to the game, but for the recipe I would actually prefer wooden planks at the bottom, torch in the center and glass all around.
But I would really like them with dynamic lighting.
I would prefer an iron one though.
Great idea right here aswell.