I cut each band of the rainbow out of construction paper and had J glue them in the correct order (largest to smallest).

Afterwards, it occurred to me that this could be a good airplane activity.  Since we fly so often, potential plane activities are always on my mind. I would precut foam/felt instead of construction paper and let J create on the seatback tray.  Foam/felt creations work well on planes and they take up little space and weight in your carryon!

This would also be a good craft after discussing the story of Noah, emphasizing that the God still places rainbows in the sky to remind us that He always keeps his promises.

To increase the level of difficulty, just add more bands to the rainbow.