Simple summer hat pattern

Hello, ladies! I need a pattern for simple summer hat for very beginners. I'm teaching my niece to crochet, she has already practiced some stitch patterns and now she wants to make a light hat. Please, it should be very simple without any super fancy patterns. Of course, they look wonderful, but she won't be able to make it properly. Many thanks from my niece and me!

Why not to try this crochet bandana: https://www.craftorator.com/2103-crochet-head-band... (https://www.craftorator.com/2103-crochet-head-band.html) the pattern is quite simple

I also appreciate some patterns of simple panama hats

My first work was also a hat, but it was quite weird because of my «skills» LOL

And I want a pattern for shady hat, please

would like a winter hat with brim