If you're a thrifty spender, your best bet is this Rebecca Minkoff Knitted Hat. It's a popular piece, while not very pricey. Another strong contender for your wardrobe is this Beanie. While the price of this product is rather reasonable, it will surely attract a lot of attention. You might also want to consider this Celtek Hat. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.
If you're in a Treat Yo' Self mood, then you absolutely must check out this Rick Owens Beanie. This product seems costly, but it's top quality. Another product we're drooling over is this Beanie. It's costly but you get what you pay for. And how about the luxurious Givenchy Hat? Yolo, right?