I am a great one for starting gung ho on things and then giving up when it comes to everyday maintenance. However, I've been pleasantly surprised with kefir. It's a lot less work than I thought and it's very flexible and forgiving.
I bought mine on ebay. I looked for the closest seller to me with a good feedback rating. I use quart jars about 3/4 full of milk and add the kefir grains. I leave it in the fridge till bedtime then put it out on the counter. In the morning I have kefir! Then I just stick it back in the fridge until I'm ready to use it.
I don't bother to strain it. I use a plastic fork to hold back the grains while I pour the finished kefir out, leaving the grains in the empty jar. Then I just refill the jar with fresh milk (or put the grains in the clean jar with the milk) and put it back in the fridge till bedtime.
If I'm going out of town I put the grains in a fresh jar of milk and it stays good in the fridge for a week. If longer, the milk might be sour but the grains are fine and I just put them in fresh milk when I come home.
I make kefir smoothies with 2 cups of kefir, 2 Tablespoons raw honey, 2 raw eggs (organic free range) sometimes a squirt of flax oil or some freshly ground flax seeds, a spoonful of green superfood and a few handfuls of frozen strawberries and/or bananas. My husband who hates kefir (and superfood)loves these! He wants one everyday. I freeze some in popsicle molds for my grandkids. It's their favorite treat.
Try kefir, you don't have much to lose. The kefir and shipping is under $10. You might have to buy a few mason or mayo jars but you can use them for lots of things (like sprouting) if you don't like kefiring. I think making kefir is one of the best things I've added to our household. I'm especially grateful for it when we come in from yardwork, all hot and hungry and all I have to do is whip up a smoothie instead of making a meal.