Wow, so cool! 13 years ago when I moved to the property I now live on, I had a similar idea and it still remains in my head and I still hope to do it some day (and your project is an inspiration to pursue it)!! Rather than a sculpture, I want to carve a chair into a stump, that I can relax in and feel the connection to the earth!!! We have several trees on the property that are candidates, and even have some stumps that are still 5 feet tall (iron wood) that could work, but the location of the current stumps is not ideal, so I am waiting on doing it to one of the others here on property!!!! We might do a pair of chairs with two stumps that are relatively close together!!!!!
Congrats on a killer project and thanks for sharing it with us!!