Has anyone used one of those companies that paint ceilings to look like a night sky? I see you can buy the paint and DIY:
eg www.glowtec.co.uk/glowshop-cart-pixie-paint.htm
I think it looks amazing but am worried about getting rid of it in the future when it is no longer wanted, I assume it would be a nightmare 
It is for DS star wars themed room I am working on for when we move. My other idea was to drape lengths of black voile across and weave LED fairy lights through it but not sure if that will look stupid
Easy to remove though.