Yes, you can...

Make yogurt in your crock pot.

I'm linking to this because it's not my recipe. So you'll have to go there to see it, but the only ingredients are 1/2 gallon of milk and a yogurt starter (1/2c of plain store-bought yogurt with active cultures; you only need to buy it once and then you just save a little each time for your next batch). I add a couple more things, too, to make it set up more - see below.

This really works, and it's delicious. I have used both low-fat and skim milk, and they both worked. However, I like my yogurt to set up a bit. So when I put the milk in the crock pot, right at the start, I add 1/2 c of non-fat milk powder and 2 pkgs of gelatin. When it's done, if you want your fruit to set up in the yogurt, add the fruit & sugar (or Splenda, to taste) immediately and stir well. Then refrigerate, and in a few hours, voila!, you will have nice firm fruity yogurt.

I personally like to have a different flavor every day, so I just mix in the fruit right before eating. The texture isn't as nice this way, but I don't care :).

Oh, and it makes the BEST, cheapest, yogurt smoothies! Loren loves to take a yogurt smoothie with him to work. I just put a cup of plain yogurt, a few tsp of sugar (he hates Splenda) and some frozen fruit in my Magic Bullet blender (mini countertop blender - it's awesome). Sometimes I add a little vanilla (yum!). Then blend for 10 sec and you're all done.

This is SO EASY and SO CHEAP that you will never want to do store bought yogurt again. If you have an infant and are buying YoBaby, you can switch to this and save a small mint; just use whole milk to start with.