On a recent trip to the grocery store for a few items for dinner, Madeline insisted she had to come along. She loves going to the store with me. I figure the more I take the kids out on my errands the better behaved they will get in the long run. It is challenging sometimes, but worth it to me.
Madeline wanted to get a cart to push around, but it was only a few items so I didn't see the point. Instead I handed her a basket and let her carry it around the store. And when it got to heavy, she pushed it.