Long ago last November I did a supplementary weaving course at Stirling Castle. Creating extra warps offers opportunities to create 3-D shapes and organic forms. It can be a little fiddly, and at times I wished I had another pair of hands. Here are the two samples I created finally finished. The first looks to me like a Picasso face!
It could be used as a rather elaborate pen holder! The second sample has supplementary warps overlapping, and reminds me of a door bolt.