Do you expect to practice your English in a serious way, but fun? Here's one example from my "Express Yourself in English through A Conversation" Lesson. It's about my imaginary city, Subara City 素晴市 (スバラしsu ba ra shi). We'll play with our imagination and practice our English speaking skills.
I have a bunch of topics, each supplemented with additional materials containing hints and questions that will bring you more ideas.
Please feel free to check my podcast for details, and reserve a lesson.