Wanjiru is a founder of Book Bunk, an independent organization that renovates and manages libraries and explores ways to disrupt publishing trends on the continent. Book Bunk is an organisation focussed on the restoration of public libraries in Nairobi. The McMillan Memorial Library and two of its smaller branches in Kaloleni and Makadara are the organisation’s flagship projects in restoring Nairobi’s iconic public libraries.
Since being bequeathed to the city, little has been done to preserve or add to the McMillan Memorial Library’s collection. The library and its two branches house art pieces, rare artefacts and approximately 400,000 individual books. This project catalogues existing collections and starts to diversify this for the more than 283 daily users of the library who through audience research, have indicated a need for contemporary content that reflects the city.