If you're on a thrifty mission, your best bet is this Forever 21 Bandana. It's a great item, while not very pricey. Another strong contender for your wardrobe is this Forever 21 Beret. While the price of this product is rather reasonable, it will definitely attract a lot of attention.
If you're looking for a bargain, why not check out this 21men Baseball Cap. While the price is very reasonable, this product is an easy wardrobe update.