Towards the end of the year I was giving a presentation on the practices and came across this website that I thought did a very nice job of explaining them in a nice easy way and giving some suggestions on implementing them.
I really liked the way they rewrote each practice in perfect kid friendly terms so I turned them into these posters that I plan to put up in my room and use somehow. I figure that the first step to using them with kids will be to make sure that the kids can understand what they mean so that's as far as I've gotten.
And here's a picture for anyone that can't see the embedded file.
[Update 8/16: I added a few more versions of these posters here. Two sets of different colors and one that is editable.]