She said that her art-making materials "need to have been open to the weather." She thus used mostly found materials: wood, iron, wire, feathers, and yellow and orange retro-reflective road signs; which flash and glow in the light. Some of her other best-known works use faded, once-bright drinks crates; thinly-sliced yellow Schweppes boxes; ragged domestic items such as torn floral lino and patchy enamelware; vernacular building materials such as galvanised tin, corrugated iron and masonite; and fibrous, rosy cable reel ends. These objects represent, rather than accurately depict, elements of her world. "The countryside's discards ... no longer suggest themselves but evoke experiences, particularly of landscape."