If you're a bargain hunter, look at this Burberry Zip Pouch. While the price is very reasonable, this piece is an easy wardrobe update. It's also worth taking a look at this Burberry Backpack. This product is ultra popular and, just as importantly, not very expensive.
If you're willing to splurge, then what you're looking for is this Burberry Tote Bag. It's more expensive but worth your money. While you're at it, also have a look at this Burberry Briefcase. Yes, this item is expensive, but it does not mean it's not worth it.