I’ve known people who collected photographs of chandeliers, doorways, children of different countries, trash receptacles, and toilets. I think it’s important for you to choose your own theme or subject. I might choose old people, food, people’s pets, policemen, but it’s too late for me because I won’t able to travel for long enough any more. You could choose an abstract thing like friendship or anger. Find what’s in you that would inspire your camera work.