Lockstep brought up an interesting idea in a comment.
Is it perhaps possible to either create a page or a section in the FAQ the explains the common diagnostic tools?
By diagnostic tools, I mean things like
filecontents. This might come shocking to Will Robertson, but not everyone knows what
lipsum is =). Granted, the concept of the diagnostic tools is easy enough to understand. But for new users of this site, it may not be immediately obvious that some parts of the proposed solution is just meant for illustration that the solution works, and is not actually necessary.
(I know that it is unrealistic to expect all users to have read the FAQ in detail, but this way at least we can throw the FAQ at them when questions come up, or better yet, do so preemptively when using these packages in an answer.)
If you think that such a page may be useful, please also answer with
What packages/tools would you include in such a page?