Last week, in honor of the publication of Studio 360’s book Spark: How Creativity Works, we asked listeners to show us how they made something creative from an unexpected combination of materials. Kurt talks to a few about their submissions, which include an icicle forest, a version of Hamlet staged on a Spokane off-ramp, and a painting made of coffee grounds.

See entries already submitted by Studio 360 listeners.

The deadline to submit your Material Mashup is Sunday, February 13, at 11:59pm.