What are some good activites related to exponential equations that I can do with my 8th grade class?

They’re a pretty advanced class. They’ve learned about exponents and have a pretty good understanding. The goal now is to learn more about them. I was thinking of giving real-life examples, but I find it’s tricky to do at this level. Any fun activities you can think of that can get them thinking? Remember, they have already learned about exponential functions, we just need to go deeper into the topic. Feel free to be as creative as you want.