Have your students learn about commas with Conrad the Comma! He'll take you through 9 different rules of using the comma. Not only is Conrad the Comma going to help teach the students how to use a comma, but he'll prompt you (the teacher) to ask you students if they have any questions, give fun facts, and ask questions to get students thinking about their daily usage of commas. Conrad doesn't have a voice so you'll have to speak for him BUT the idea of learning from another source, besides the teacher, had worked at keeping my students engaged; hopefully, It'll work for yours, too!
As always, please alter this as needed for your grade level and class!