Charity Shops
The goods, the volunteers, the customers.
Spend time in and around charity shops - the window displays, the people browsing, the volunteers behind the counter, the goods themselves.
How to shoot it: Ask the manager first, then shoot the window displays, the browsers, the volunteers, and the sheer strangeness of the goods. The window, with its mannequins and the street reflected in the glass, is a ready-made frame. Mixed light inside means a higher ISO. The subject is value and the afterlife of objects, so look for the telling item as much as the people.
The output: A series about value, generosity, and the afterlife of objects.
High ISO for the dim interior.
Ask a charity shop if you can photograph inside. Spend an hour there.