aleta's Profile

What about textiling the ceiling? It can be difficult to utilize in a rental situation, but if you are short on wall space and are able, a nice hippie tapestry type thing will hang like a lovely pillowy tent-like ceiling. If you are more demure than that, though, a few layers of sheer white curtain panels will be largely unnoticeable, and they are still lightweight enough not to require any major hardware.

As an indirect-lighting bonus, throw some Christmas lights up there and it's all twinkling stars at night.