Grey water suggestions

I like the Earthship grey water set up, but would like to hear other solutions to flushing toilets with use shower/sink water without the need for a botanical cell running through the property.
Any ideas?
Thanks
Dave

We are having our home built with two 1,000 gallon septic tanks; one for the toilet and the other for gray water.
The gray water tank won't have leach lines, simply a filtered overflow for a living pond.
The gray water in the tank will be pumped out to primarily water the orchard and wild flower meadow the wife calls her secret garden. She has some wild plans for it, including big stumps pulled from the ground, cleaned of dirt and rocks, and displayed at certain points in the "garden". Guess who'll be doing all THAT work!
Anyway, that's the plan. If your house has a crawlspace you can retrofit a gray water catchment system to your plumbing. I'd seek the advice of a licensed plumber  before cutting anything loose. There are codes one must follow. In some places you might have to get a permit and pass milestone inspections.

When we built the house, we ran the bathroom into the septic system.  

Then we made a french drain for the kitchen sink and the laundry room.  This has worked really well for us since 2013.

We hooked ours up to a septic, then put in a diverter that would allow the sinks and tub go to a branched graywater system. The trees in the system have a deep mulch  donut around them. http://oasisdesign.net/greywater/brancheddrain/

Thanks for the replies.
I've looked into grey water branched systems since making the initial post, and like the idea.