Maze

Eyes replace main wallpaper in main chamber.  Make center transparent.  Maybe make transparent the pupil and white part and color the tendrils red.  Or blue.

Create transparent texture with cracks on them.

Create background for main chamber.

Come up with meteor room

Make lighter in the cave play Voltaire

Ducksu

Add transparency to couch parts

Later:
Grey-ify sky pod 
Make Moe-like monster for Loathing pod