What was the best self-answered post in 2016?
Self-answered posts exist because the OP solved their own problem, or because they took the time to write up something useful/interesting for the benefit of the community.
Vote either by making a post linking to a self-answered question and giving a brief description of why that self-answered question should win, or by upvoting an existing submission, Voting lasts two weeks, i.e. until Jan 29 2017.
Unfortunately, self-answered questions are not that easy to search for on the direct site search, so here is a query for all of the 2016 ones, in case people find it useful (and which can then be refined by score / by tags / etc.).
This is part of the Best-of PSE 2016. If you are interested in providing a prize bounty for the winner (mostly highly upvoted answer of this meta post), please comment.