Ahhh sippy cup, bain of my mothering existance...
Always missing, then found with curdled milk inside.
A good deal on a quality sippy is always appreciated, so here you go!
First, create an account at www.playtex.com , the following day they will email you with a $2 manufacturers coupon. **Tip, if you hit the "back" button two or three times, it will reprint the coupon!
Second, go to www.target.com and hit up their coupon section, there is a $2 Target coupon. Stack these two together for $4 off a sippy! I just got mine yesterday and they are $4.39, so after coupons just $0.39 - hip hip hooray!