More than 725,000 German children started school in the past year. It is already obvious that they will need computer science skills to prevail in the professional world and in everyday life later on. Experts are therefore calling for children to be introduced to algorithms and programming languages early on. The available tools are usually rather expensive, however, and do not necessarily satisfy the children’s play instincts. The start-up Fold-IO uses a combination of inexpensive craft paper cut-outs and minicomputers. Fold-IO is supported by the IT Incubator at Saarland University and funded by the German federal funding programme EXIST.