Have an old car seat? Target is hosting a Car Seat Trade-in Event through September 13th! Simply bring in any used car seat to your local Target store and trade it in for a coupon valid for 20% off select baby gear items in store or at Target.com. The coupon is valid on any car seat, booster seat, car seat base, travel system, stroller and other select baby gear items. The coupon is valid in-store and online!