I made my own kombucha for a while. I never liked it but my wife did and it was expensive so I gave it a go since the ingredients are dirt cheap. I ended up loving it when it was homemade. We moved in to a new place just before the kiddo was born and I never picked it back up for some reason. I ought to get back to it.
I also used to make fermented hot sauces, pickles, and sauerkraut but again, stopped making them a while back. I've done sauerkraut a couple of times in the past few months but that's it.
@Harry Klippton is the fermentation king though, he's been inspiring me to slowly start back to it and why I was getting my funky groove back with sauerkraut.