My next challenge will rely heavily on Stack Snippets and http://api.stackexchange.com/ to gather data from the answers (similar to this or this).
I want to Sandbox it to iron out any kinks, but none of the data gathering will work if I answer in the normal Sandbox because answers can't have answers.
Could I (or anyone in this situation) make an entire question on Meta that is the Sandboxed challenge? Then I can add some answers and make sure the Stack Snippet works. I would delete it after I post the real challenge.