If you're looking for a thrifty option, your best bet is this Mountain Hardwear Rucksack. It's a popular piece, while not very pricey. Also check out this Baggallini Tote Bag. It's an item you're bound to love which also doesn't cost the earth. You may also want to look at this Hurley Tote Bag. This item is not expensive either, but it will make a difference in your wardrobe.