Introduction : transforming innovations in Africa : explorative studies on appropriation in African societies / Jan-Bart Gewald, André Leliveld & Iva Peša -- Who killed innovation in the Cape wine industry? : the story of a stuck fermentation c. 1930-1986 / Paul Nugent -- Entrepreneurship, colonial monetary economy and the limits of creativity : appropriating trading stores in Northern Namibia, 1925-1980 / Gregor Dobler -- Frugal innovation in Africa : tracking Unilever's washing-powder sachets / Cees van Beers, Peter Knorringa & André Leliveld -- Mobile cash for nomadic livestock keepers : the impact of the mobile phone innovation (M-Pesa) on Maasai pastoralists in Kenya / Marcel Rutten & Moses Mwangi -- From Gao : Sawaba and the politics of decolonization and insurrection in the Songhay zone of Mali and Niger (1957-1964) / Klaas van Walraven -- From self-help group to water company : the Wandiege community water supply project (Kisumu, Kenya) / Samuel O. Owuor & Dick Foeken -- 'It is time to start my own farm' : the unforeseen effects of two waves of resettlement on household formation in Zimbabwe / Marleen Dekker & Bill Kinsey -- 'Cassava is our chief' : negotiating identity, markets and the state through cassava in Mwinilunga, Zambia / Iva Peša -- The social cocktail : weddings and the innovative mixing of competences in Botswana / Rijk van Dijk -- Of labradors and libraries : the transformation of innovation on a farm in Kibale, western Uganda / Jan-Bart Gewald -- Engine of change : a social history of the car-mechanics sector in the Horn of Africa / Stefano Bellucci & Massimo Zaccaria -- Water innovations among the Maasai pastoralists of Kenya : the role of outside interventions in the performance of traditional shallow wells / Moses Mwangi & Marcel Rutten -- Stealing from the railways : blacksmiths, colonialism and innovation in Northern Nigeria / Shehu Tijjani Yusuf