Are you looking for a subject for your images? If so, think about round things. There are plenty of circular subjects in the world and they fit nicely into a square or near-square crop.
This dandelion is a case in point. I was out walking and had my macro lens on the camera. I saw the dandelion head and held it up in front of the camera so the sun was behind it. The sky was cloudy and the smallish aperture I used brought just enough structure into the background. Shooting at f2.8 would have given a very diffuse background. The simple circle gives our eyes permission to investigate the complexity of the individual seed heads.
This pumpkin was part of the annual pumpkin competition at Beer in Devon. Whilst it’s not a full circle we know enough about how pumpkins look to fill in the gaps. I was careful to include the trophies in the background to give better context.
The Devon trip gave me a chance to photograph a bit of social history. By the side of the road between Beer and Sidmouth there is a memorial to a Dr Thomas Gilbert-Smith who died at that spot in 1904. The memorial takes the form of a bench, and has three slate plaques telling the story. The round one tells another story as well.
Don’t take a circuitous route, or take the long way round, to using circular subjects in your photography.