One of our favorite Ramadan decorations are paper mâché moons made with balloons, paper, a flour/water paste and silver paint.
After hanging the decorations we did some experiments with a flashlight and some round objects to see how the shadow of the earth creates the shadows of the moon phases.
We watched this you tube video to review the concept: Lunar Cycle.
To illustrate the lunar cycle for our decorations we made garlands this year.
Please see our Ramadan project: