Then I can across this http://paperkraft.blogspot.com/
I looked through some of this and I'm impressed at what people can make out of paper
from the simple:

To the difficult

and down to the 'unimaginable

[this is just one of the two 'Howl's Moving Castle' papercrafts, this being the more difficult of the two]
This would be a really nice hobby to pick up on. Way less expensive than my gundam model kit hobby.
What draws my interest to this is the fact that none of the pieces are made for you, you have to build each part separately and then attach the parts together to make the final model.
Crazy to think that there really isn't any limit to what this can do.
