If you're on a thrifty mission, this Missguided Beanie will fit the bill. It's a fail-safe choice, while not very expensive. Also consider this Asos Beanie. It's an item you'll love which also doesn't cost too much. You might also want to consider this Asos Hat. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.
For something in the middle of the price range, we've got your back with this Jennifer Behr Beanie. This item is bound to become a total wardrobe staple. Also look at this No.21 Beanie Hat. It's an attractive option both price and quality-wise.