I agree--a BV ball bag is a perfect idea... My understanding is that Saks is doing a "spend some, get some" promo on Thursday only. Basically if you spend X dollars, you get a gift card for a little bit. So it's like more money to put towards a bag. Or money to splurge on some nice perfume or something.
Saks is also having a 10% off code for February, it's "SHOPFEB" I'm assuming you can combo the offers since the "spend some, get some" is an automatic thing. That last time I looked, saks.com had the ball bag in chocolate brown and black... Something to think about!