An ekphrastic poem is one in response to a piece of art; for example, in response to a painting or a statue.
Write an ekphrastic poem in response to a piece of art.
In your poem, you might engage in a conversation with the piece of art, or you might imagine what the subject of the piece of art could be saying.
Out of ideas? Go to a local museum, find a piece of art you admire, and write a poem about it.
Ekphrasis–A Poetry Journal is edited by Laverne and Carol Frith. Here is a link.
One of my blessed readers (thank you, Susan!) suggested that if you don’t have a museum or public art nearby, go to your library and look at images in a book about art.
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Andrew Shattuck McBride
Andrew Shattuck McBride, Writer's Blog 
Yes, cool idea. I wrote one at the museum in La Conner last summer. You can also go to the library and look at art books. Lucky for us, we have both options.