Ask the kids to list names that kids often call other kids. You will hear things like, "fat, stupid, dumb, retard, worthless," etc.
As they are shouting them out, write them down on individual Post-It Notes. When you've finished, stick them all over yourself as you talk about how we give each other names/labels. Talk about how when others look at us, these things are what they often see.
Truth: When God looks at us, He sees "wonderful, chosen, bought" He doesn't see the labels that others give us. He has a purpose and plan for each of our lives that is greater than anyone else could ever imagine.