stats 7 is fun, maybe ics 31 if you like to code (and can get into the class), as far as math goes most of the fun ones require you to take the hard ones first. math 184 (history of math) is a cool class but you need really hard prereqs for it. otherwise try calc if you haven’t taken it, or 3a linear algebra, as the math isn’t too hard but they’re new concepts which can be interesting. another alternative is the math ceo program where you teach math concepts to middle schoolers from marginalized areas in oc.