I may be way behind the pack on this one, but I recently came across a very intriguing book about Saori, a Japanese (of course) approach to weaving that is very organic and improvisational. The above image "Waterfall" is a piece by Terri Bibby of Saltspring Weaving. (The photo is hers as well.) She has a great website and blog with oodles of information and images of this weaving style.
She offers a great series of workshops from her studio on Saltspring Island. The philosophy of saori is one of non-judgement, self-discovery and accessibility, which results in wonderful freeform, spontaneous weaving. Here are "The SAORI Slogans":
1. Consider the differences between machines and people.
2. Let's adventure beyond our imagination.
3. Let's look out through eyes that shine.
4. Let's learn from everyone in the group.
Check out the earth loom on the blog. I can't wait to run out and make one myself.