I have a really simple and newbie hat pattern for you! It worked in the round, so there are no seams. I really like a seamless hat. I use a single crochet stitch on the front loop for the entire project. So, if this is the only crochet stitch you know, you can do it!
This is done with thick and bulky 5 peso yarn. I used Bernat Roving because it has a smooth and matte finish that I really like. I have not experimented with other 5-peso threads, but I suspect you will get similar results. If you are using a 4-peso yarn, I think it is a hat for children. (But that’s an assumption, I haven’t made any with this thread yet.)