Thank you for offering your input and insights. What follows is a list of things I think either have some viability or I'm pretty good at and like to teach. I will be creating these classes to be experienced asynchronously, so students would be watching videos, going through presentations/handouts, etc. all at their own pace. I have predominantly created synchronous curricula (and I also highly value creating engaging, participatory content), but I'm excited by the challenge of finding ways to be engaging asynchronously. Also, these are aimed at adult audiences of any age.