This paper presents an overview of established and innovative means and teaching approaches that contribute to higher students' attention during lecture. The results are based on an international survey among lecturers from eleven universities. This survey was initiated by three lecturers from different countries who met at EDUCON 2016. The objective was to collect teaching experiences about playful means that motivate students to be attentive during a lecture. The proposed teaching approaches fall into three categories: established teaching methods, unconventional extrinsic methods, and tools. We focus on the extrinsic methods and discuss 14 illustrative examples of these approaches.