Shields works with found furniture, particularly chairs. He started to use chairs because they are thrown out so often and thus are easily attainable. He sees them as reflections of our relationships, even having human names such as arms and legs.
"I am not trying to re-invent the chair, make it more comfortable or establish a sleek new design for modern living. Instead, I hope to address the role that furniture plays in our lives and tweak that context as a means to investigate social connections. Tables speak inherently of support and community, cabinets are boxes for secrets and chairs are blatant representations of our selves." (via)