This lovely Japanese word often warrants a definition to kick things off. The Wikipedia page describes Bokeh as 'the aesthetic quality of the blur produced in out-of-focus parts of an image' and also as 'the way the lens renders out-of-focus points of light'. This is certainly then an invitation to explore shallow depth of field, and ideally in a scenario where the backdrop has some brightness and light that your lens can work its bokeh magic on. Those points of light will be smudged together, and might create attractive circles that add a fantastical quality. Different lenses work differently, and so you can see this as a good way to get to know yours better. Any subject is fair game for this contest.