I like to daydream around hard challenges.
   I don't know how to build a spaceship.  But maybe it would be fun to
   try.
   To make it harder, let's make it out of only something ridiculously
   hard to do it with, like toilet paper, or leaves, or old newspapers.
   I don't know what kinds of problems one runs into when building a
   spaceship, but when I start planning it I think the first problem will
   be getting something to go really, really far against gravity.
   Another problem I hear about is burning up as you accelerate through
   the atmosphere.
   I imagine aiming what direction you go in is pretty hard too.
   I'm thinking I'm probably okay with there being some guidance computers
   and robotics on the craft, but that we would _mostly_ make it out of
   tissue paper or whatnot.  Making computers out of tissue paper can be
   considered a separate problem, for now.
   One way to make tissue paper move is to burn it.  Could we use a
   tissue-paper-fueled rocket to accelerate the craft?  Almost certainly
   not, but doing the calculations for this could inform what thing to
   consider next.
   I have no idea how to make a rocket, or how rockets work, but I imagine
   that when you burn something, it turns into gas, and the expansion of
   the gas is much larger than the thing you burned, so if you direct this
   gas in some direction or another, it might push something further. I
   dunno.  Like getting up from a chair because of a fire you sat in.
   Maybe?  I dunno.
   Maybe I'll briefly websearch for "solid fuel rocket" and see what I
   get.
   Oh, great, this is a very well-studied thing.
   [1]https://en.wikipedia.org/wiki/Solid-propellant_rocket .
   I'll read the "Basic Concepts" section.
   Huh, they mix the fuel with oxidizer in advance.  Early rockets
   couldn't be turned off, after being ignited, until they burned up.
   Anyway mixing the fuel with the oxidizer would make design _so_ much
   easier.  I wonder how thrust is calculated.
   I'll click around some.
   I'm saving this as a draft.  The 'cocky' attitude I post with on this
   list is an affect.  However, I'm noticing that posting this, it appears
   that I might only need knowledge to accomplish things, which could
   scare people wanting to control me. Maybe that's why it is so hard to
   do even the smallest thing in my life.  Unsure.  Also unsure why I
   post.  So, draft.
   ---
   this draft was written 3 days ago.  it's now 2021-12-01 and i'm sending
   some drafts just for consistency I guess.  glancing through this, i'd
   kind of rather not send it, maybe because it's kind of in a certain
   uncanny valley of sanity.  (the uncanny valley is where something
   ineffable is clearly wrong, but it looks pretty good by everything you
   can describe).  but here it is!

References

   1. https://en.wikipedia.org/wiki/Solid-propellant_rocket