Check out Op Shops for great scarves - there's a lot of YouTube sites showing how to tie them and you will quickly find a couple of easy ties that you like for everyday wear. I wouldn't rush out and buy a wig as, particularly with summer, you may find one uncomfortable - I didn't wear one much even during a southern winter. I would guess that there would be a wig library somewhere (someone else may be able to help). Other than that, a good hat to keep the sun off - if it's straw, you will need some sort of soft cap underneath so that you don't get burnt or the skin irritated. I used to wear a baseball cap or a soft skull-type turban if I was out on the paddleboard.