If you don't want to make your own combination keycordbag, the keycordbag-sets are a good solution.
Beijing Pocket Keycordbag set S, Black Croco Eco Leather
Beijing M Keycordbag set M, Eco Green
Beijing Wallet de Luxe Keycordbag set S, Zwart Croco Eco Leer
Beijing M Keycordbag Set M, Black
Beijing M en Keycord Studs M, Brown Eco Leather