Mood Box

I'm still searching and exploring how to make this mood box....just because it's called a mood box,doesn't mean it has to be a box or even walls...tough huh...so how does a mood box look like? I'm planning on doing a happy + confusing mood as it plays with colours and lightings....as for the form? well still searching...waiting for ideas and inspiration to fill my head right now..crossing my fingers....please please come to me ideas!!! Really need your help now...