One book that I love to read in my classroom is Have You Filled a Bucket Today? by Carol McCloud. I like to read this story in conjunction with an actual bucket and objects to put in the bucket.
When I read this story, I have students write down things that they or others have said that would be bucket fillers and things that they or others have said that would be bucket dippers. After I read each statement aloud we either add something to the bucket or we take something out. It is a visual way to show how out "buckets" work and the things we say and do do affect others.
Try it in your classroom!