This report provides an overview of activities carried out during Michaelmas Term, Autumn 2009, as part of a Cambridge University Library Arcadia Project Fellowship on "Rapid Innovation in the Library". The approach taken during the project was to look for opportunities for "quick wins" in the current library setting that could be used to illustrate potential (and tangible) benefits from engaging with current and emerging technologies and changing trends in user behaviour. Where possible, the work built on work undertaken as part of the previous Arcadia projects.