If you're looking for a thrifty option, your best bet is this Opening Ceremony Hat. It's a fantastic product, while not very expensive. Also consider this Plush Hat. It's a product you'll love which also doesn't cost too much. You may also want to look at this Beanie. This item is not expensive either, but it will make a difference in your wardrobe.
If you can afford to spend a little more, we've got your back with this White + Warren Beanie. This piece is bound to become a total wardrobe staple. It is also worth looking at this Beanie. It's an attractive option both price and quality-wise. Consider this Jocelyn Beanie too! Great value for your money.