Writing in my diary. I made my bed in my closet. The closet and ceiling were painted blue and had stars and a moon that were painted with glow-in-the-dark paint. When I turned off my light at night, the stars came out.
Wow ! Crazy but cool !
I also used the glow-in-the-dark paint to draw a face on a mirror I had. When the lights were off, there was a ghostly reflection in the mirror. The only problem is that all of that light--even though it didn't last for more than an hour--was too bright to sleep.