Using brown paper lunch bags, have your child decorate the bag in any manner which he or she chooses. Some ideas would be to glue old buttons, macaroni whatever you may have on hand. They can also use crayons, glitter, or bright felt tip markers. Draw balloons or clown faces. If the party is to have a theme use it on the bags. Put the time and date of the party on one side and ask the children to bring the invitation with them to be filled up with goodies.