Chairs for bags
The worst part about carrying around a bag all day, especially if you are a woman, is that you have to usually put them on the floor or rest them on a dirty table. There are not a lot of options when it comes to where you can place your bag.
Here we can see that in public places, a lot of chairs come with this groove in them, which is designed for bags of all types. So grocery bags and even luxury ones can be placed here as the owner sits to rest or chat with a friend. Also, the groove makes it easier for someone to steal it.