http://www.pascalite.com/AboutP.htm#Why 
This is a link to the type of clay that I’m talking about. It is definately not ceramic clay. 
I realize that pellets are like mulitvitamins and that is exactly what worries me about them. Synthetic vitamins are being found to be more and more damaging to people. I was just reading about how synthetic vitman C damages mitochondria, and that is very disturbing to me. I would LOVE to move away from a pellet based diet… Not right now, maybe in a few months. I know that they can also help. But I believe they are a stop-gap, and not an ideal scenario.
It seems like minerals have been a majorly overlooked part of nutrition for quite sometime. For the last few decades, all the focus has been on vitamins. It wasn’t until I got into livestock that I realized how big of a deal mineral supplementation was and now I realize that I was also lacking in minerals in my own diet, which I have done a lot to correct.
I love the idea of foraging from a large area, and I totally agree. I do the same thing. I also try to pick things with different root lengths to get the benifits from different layers of soil. I do thiks for myself, too. This just got me thinking that plant aren’t the only thing that bunnies put in their mouth in the wild.