Elysium

Elysium (Chaotic Good) is a popular plane in myths, and any Chaotic Good hero worth their salt claims some connection with the place. Elysium is a place of change, not the arbitrary change-for-change's sake of the Maelstrom, or the cruel anarchy of the Abyss.
Rather, it is the kind of change where everything flows naturally, without any deference to tradition or the rules of nature. A group of people may come together, running through the fields, and shift to become a pack of wolves, laughing and dancing as the terrain changes around them. Those that live there don't care to remember their "original" forms, and even any buildings constructed there will quickly be swallowed up by the land as it assumes new shapes.
Like all outer planes, an eternity in Elysium would be perfect for some and hellish for others, but those who just want to laugh, love, daydrink, and ignore any rules they don't like may find themselves at home there.