So far I am considering two ideas. The first is the local pier. This gives the opportunity of pattern and rhythm as well as tonal variation in repetitive constructs such as the deck planking and railings, the pier legs etc. To bring variety there is also the tonal range of the sky if I photograph this in a manner that it forms part of a pier view and choose the right time to do it.
My second thought is a little more abstract but something I will investigate. This will be a series of photographs of one of the pedestrian bridges across a nearby A road. Might sound a bit strange but it has some great shapes. My only concern is being able to get enough variation across 5 to 10 images.