An outreach programme centred around nuclear physics making use of a LEGO® Mindstorm® kit is presented. It consists in a presentation given by trained undergraduate students as science ambassadors followed by a workshop where the target audience manipulates the LEGO® Mindstorm® robots to familiarise themselves with the concepts in an interactive and exciting way. This programme has been coupled to the CERN-ISOLDE \(50^{th}\) anniversary and the launch of the CERN-MEDICIS facility in Geneva, Switzerland. The modular aspect of the programme readily allows its application to other topics.