This is the kit I purchased from Wiedamark.com. It came pretty quickly and so far I haven't had issues. It included a light source with a twinkle wheel already installed, 600 fiber strands (2 bundles of 3 hundred strands (three different size strands)), a remote, a color wheel you can add to make the stars colored, and a key fob to turn it off and on remotely.
a much easier alternative is to use glow-in-the-dark stars you affix to the ceiling with poster glue. or just straight glow-in-the-dark paint. you'll get the star effect for awhile, then they'll gently fade as you fall asleep.