Please use this list of questions for any purpose! I use them as warm-up questions, for students who want to do extra English practice, and to make small talk with students.
-The key for these questions to work is to make sure it's a topic the student is excited to talk about, and that they feel safe to speak (as in not in fear of being wrong--in conversation practice I usually focus more on students producing output than correcting grammar etc.).
-To make the questions easier of course you can give them hints in Japanese or simplify the question.
-To make the questions deeper and more challenging, be sure to ask "Why?".
Have fun talking to students. This is a great way to bond with them and get to know them better! I made these questions with Junior High School in mind, but depending on levels these could work in a variety of settings.