The cardigan is perfect for transitional layering. Opt for a classic button front cardigan for work-ready looks and loose silhouettes to wear with over simple t-shirts and denim.
If you are on a budget, your best bet is this Kimono. It's a popular piece, while not very costly. Another savvy option is this Vikki Vi Kimono. While the price is competitive, be sure that this item will become a valuable addition to your wardrobe. You may also want to look at this City Chic Shrug. This item is not expensive either, but it will make a difference in your wardrobe.
If you're looking for something in between pricewise, you're in luck with this Theory Shrug in stock and waiting for you. You are bound to love this product. In this price range, you can also check out this Jocelyn Shrug. It's an attractive option both price and quality-wise. Alternatively, opting for this Nordstrom Open Cardigan is a smart choice as well!