There are several great classes with open spots right now - screenprinting, vinyl cutting, techsew, laser cutting.
My favorite way to look for classes is this view:
I feel like it’s a tough spot because if I make a big deal out of a class on facebook, it fills up immediately. If I let it lay low on the calendar, it doesn’t fill up. So instructors if you really want your class full let me know and we’ll generate some interest, but I also kind of hate this all-or-nothing, viral-or-not world we live in these days.