I was just thinking about this question today and I thought about a pro for Mars which is a con for The Moon.
First I would like to say that The Moon is closer and would be closer to Earth if anything should happen. Now it takes 1-3 days to get to the moon (not 100% on that fact, I do know its...
Paper mache (how many other people do you think is actually going to use this one), bunch of construction paper crumpled up glued together (different colors for different layers), Go to Hobby Lobby and browse, Ballons inside each other (i think this one would be somewhat challenging to make but...