Participants wrote good and bad feedback anonymously on strips of paper which we then turned into Mobius strip wristbands. The idea that good and bad are linked and you need an experience of one to fully understand the other. If you follow the line from the beginning you will journey around and end up at the starting point. This idea was used a lot in my Alexander Technique Training and relates strongly to Spiral learning. Revisiting the same points but with increased knowledge each time.