This is a very simple bucket hat pattern and takes an hour or so to make and uses about half a metre of cotton fabric. If you have small children do try this one (its on Ollie/Oliver and Co, a blog, I think). The pattern goes up to 9 year olds - I have expanded it by half an inch all the way round and made myself a sun hat too! I used a more upholstery style fabric and did not line the crown or sides this time.
My last attempt at a sun hat for me was not a great success but this one seems a little better as it sits lower on my head. I am not a hat person normally but we were out boating the other day on the River Ouse and I had to borrow my husband's spare one. So hot and burning!