The beanie is our saving grace during the colder months. However, it can also be used to step up your street style game.
If you are on a limited budget, your best bet is this Asos Knitted Hat. It's a terrific piece, while not very costly. In this price range, you can also look at this Hype Beanie. It's also a popular item and won't break the bank. You may also want to look at this Hat Attack Beanie Hat. This item is not expensive either, but it will make a difference in your wardrobe.
If you're looking for a happy medium, take a look at this Johnstons Hat. While the price is very reasonable, this piece is an easy wardrobe update.