Kaplods, wait until you try growing sprouts! Equally fun and rewarding. Toss some sprouts on a salad, on veggies - whatever. I got seeds for several different kinds of sprouts at the health food store.
I have made yogurt by various methods. I finally bought a yogurt maker which I like for convenience, but it definitely takes away from the "hippie" vibe.
I have read that you can add some gelatin to the yogurt to make it firmer. I haven't tried it, but you can google it...