I did this on my mission, but it would be a great FHE.
I LOVE that idea, Melanie! I'm totally going to use that--love the quote, too!
I am confused on how to make the rocket, though.
No, you don't need the contents of the bag.
An idea I had for this is to use the scripture in Alma 32 where it talks about faith being like a seed, and to "experiment upon my words" to see if they are true.