Ok think about this, your walking down a cave inside a extreme hills biome and something catches your eye. You ventrue onwards to find a rare and bizarre biome.
First are glowing mushrooms blue, yellow, and green. They function just like the new fungi trees in the nether,including a new wood type and new material from the fungi.
"Sapplings"can be placed in flower pots and glow.
Glowslime, obtained from the fungi and can be used to craft glow lanterns, glowslime blocks, can be combined with cobblestone to make glowrock,
Glowrock, in a way functions just like basalt hang in pillars and provide a soft sea green glow and can be made into walls, stairs, bricks, etc