This sort of shape, although I don't particularly like those ones. I thought it would be really easy to find one bu t I haven't.
Have you seen a nice one? For preference, I would like it wooly ish with at least some natural fibre if not all and a pale colour, and I need to by online.
I have tried ponchos, but I look like an idiot in them. I will look fabulous, of course, in a triangle scarf and not at all similar to how I look in a poncho.