This paper presents the conceptual basis and practical implementation of a Wikibase instance (ENEOLI Wikibase) as framework for collaborative workflows, developed as part of the COST action European Network on Lexical Innovation (CA22126). The platform supports the joint creation and publication of three interlinked resources, all integrated into a single knowledge graph: (1) NeoCorpus, a curated repository of bibliographic records and full text collection of the field of Neology; (2) NeoVoc, a multilingual metaterminological vocabulary designed to model, structure, and harmonise the conceptual and terminological frameworks used in research on neology and lexical innovation; and (3) a collection of neologisms, which documents and describes emergent lexical items across various European languages. Wikibase, a free and open-source software platform, provides a generic and flexible environment for collaboratively editing and publishing multilingual, cross-domain descriptions of concepts and lexical units as FAIR Linked Data. The paper explains how resources developed by different ENEOLI Working Groups are made interoperable and linked to each other on the Wikibase instance, describing workflows and preliminary results. We believe that our choice for Wikibase as infrastructure solution for a collaborative Knowledge Graph, here for the domain of Lexical Innovation, may serve as reference for similar endeavours.