I blogged on my private blog: https://blogs.gnome.org/aklapper/2016/01/28/wikimedia-google-code-in-2015/
Someone could and should take over (some of) that content to the official Wikimedia blog, I think.
Someone could also take one or two statements from our 35 GCI mentors by re-using some feedback from T123134 once received and re-checked.
See Also:
T124656: Republish Google Code-in participant blog post(s) on official Wikimedia blog
Note: There is already a draft for Kiwix: https://meta.wikimedia.org/wiki/Wikimedia_Blog/Drafts/How_Google_Code-in_helped_this_year_%28again%29_open-source_project_Kiwix