Ethan Zuckerman's post 1
Innovation (often) comes from constraint (If you’ve got very few
resources, you’re forced to be very creative in using and reusing them.)
I think this is one of the most genuin thoughts and guidlines. The ability to see through how to use things and not focus on what you could do if you had something but focusing on doing things with what you have at hand, making new things and creating from what resources you really can bring to the effort is a basis for innovating and creating and not plain fantasy.
This doesn't mean that one should stop because you run out of resources, but think how the resources might help bring you to new resources.
It's something that manifests through most of the other posts and comments. To use one's resources the best way possible.
It's mainly the thought of being able to use, and really use what you have, to create more. and not just waste the resource.