The Mixology class isn't bad. There were a couple of drinks I didn't know and the technique was slightly different than I'm used to. I'll probably keep going to it to see how much new there is to pick up. More identifying ingredients and playing with flavour profiles would be good.
I checked where they have yoga too. That room might be big enough for self defense training. Not proper fights and not many at a time, but I think it could work.