The Big Mountian looks great in any bedroom or playroom. It dampens sound and can also function as a pinnable board or gallery wall. Warning: you may be inspired to take a hike or hit the slopes.
This project is Moderately easy and can be configured however you like. It comes with 4 boxes of sola felt wall tile in five different colors (including the bright little sun). For ease of installation, the actual package has two fewer tiles than the image pictured.