Many supermarkets now have carts equipped with infant seats and harnesses, but with the older type of seats you need to strap your baby in with reins. A backpack is ideal for carrying your baby on shopping trips; her interest will always be engaged, she will feel very secure with such close physical contact, and she should be well behaved and cry very little. Best of all, your hands will be left free. Try to undertake a shopping trip accompanied by your partner and have him carry the baby on his back, leaving you free to make the purchases. Reins are very good idea for an older child, because they give her a sense of freedom and independence, but she will never be able to very far away from you; a wrist link that is securely attached to her reins will prevent the two of you from becoming separated.