I use Learning Cardigan in workshops to demonstrate repair techniques. Participants also experiment on it, and it is also documentation of these episodes. It was originally knitted by my Gran, and, after inheriting it, I chose to use it in this way - passing on some of the skills she taught me.
Co-creating artefacts from reused domestic objects such as this, is one way I communicate repair as a design imperative, user activity, service, and as community builder.
Learning Cardigan (2014 onwards) Acrylic Cardigan, various threads and yarn