Hi,
I, too, have used Prezi and I think its new format is making it easier for students to use. In addition to Prezi, I've had students build infographics using sites like, Piktochart, Canva, Venngage, and easel.ly (
https://blog.bufferapp.com/infographic-makers). Actually, my students are each taking one of these sites in addition to the others listed on this page to review. They will create an infographic that relates to their slide show or Prezi that could be used on social media for marketing.