My wife has a sewing business and has created some ID4 specific bags that can be found on her Etsy site. These bags are designed specifically for the front door panels of the ID4. The long bag is made to fit in the wasted void space in the door panel. They can organize and hold a variety of items. If you are interested in seeing more, please watch the quick YouTube video that better describes the set of bags. Her Etsy shop can be found here for more information and to see the different colors.