A charity shop is a store where people donate things they don't want anymore, like clothes, toys, and books. These things are then sold to raise money for a charity. When you buy something from a charity shop, you are not only getting something that you might like, but you are also helping others. The money that is raised from selling things goes to help people who are really in need, like those who are sick, homeless or hungry. So, it's like when you share your toys with your friends, but on a bigger scale. People give things they no longer need, and other people buy them for a good cause.