Do you know of any easy, light, hats that I could crochet?

I’ve been wanting a hat kind of like this one for a while now, but I would never buy anything from American Girl, and I can’t find any patterns online. It would be a crochet project, right? Or a knitting project? Would it be very hard? I’ve done a little bit of crocheting and I’m a pretty experienced knitter. My mom knows how to do anything knitting-wise, and I’m pretty much on my own as to crocheting.