The cabinets in an RV tend to have a small amount of horizontal space and a large amount of hard-to-use vertical space. You want to try and use as much of this vertical space as possible, but how? Installing wire closet shelves in the cabinets is an easy way to add extra shelves that aren’t too expensive.
If you don’t want to install something, you can get small shoe racks and put them inside the cabinets for shelving. In areas where you may not be able to add either of these, such as a slim pantry, put things in reusable containers and ditch the original packaging. This way you can stack them and get rid of bulky, odd-shaped packages.