Integrating community-driven vocabularies into the Wikiverse, in particular Wikidata, Wikipedia and Wikimedia Commons, is the aim of this TWG. Free content’ is to be created in the spirit of open science, which also enables the citizen science community to participate in research data. Examples include vocabularies and pictorial elements from the specialised domain of numismatics and ceramology, as well as petroglyphs (rock art) and monoliths (e.g. rune and Ogham stones).