Scrolling through the list, the challenge is to find a topic broad enough for interpretation, and yet hasn't been done before. Reflections can be physical reflections in other objects or portraying a reflective attitude or two objects reflecting the same pose.
I think maybe Minimalist would be a good topic? Good especially when the weather is not cooperative! Could apply to abstract art, as well. Just an idea. I'll remove this topic if it isn't popular... and change my vote! lol
My suggestion is: Reportage. You can illustrate issues that seem important to you, your family, your community... You can grab your camera and go out to show some interesting story...