Celebrated all over the world
The 6th birthday was celebrated in over 40 different locations around the world according to the Wikidata item for the birthday:
Various Wikidata related presents were made by various volunteers. The presents can be found on Wikidata:Sixth_Birthday on the right hand side and include various scripts, tools, dashboard and lists.
The 7th birthday will again take the form of a WikidataCon conference.
Watch this space…