If you can’t spend much, this J.W.Anderson Pendant will fit the bill. It's a foolproof choice, while not very expensive. Another strong contender for your wardrobe is this Valentino Bracelet. While the price of this piece is not very high, it will definitely attract a lot of attention. You might also want to consider this Marc Jacobs Bracelet. 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 these Christian Dior Sunglasses. This item seems expensive, but it's well worth it. While you're at it, also have a look at these Prada Sunglasses. Yes, this item is expensive, but it does not mean it's not worth it. And how about the luxurious Erdem Sunglasses? Yolo, right?