Use a 5-gallon pail with a lid to hold your extra flour and dried goods if you have a place for it. It will help keep any critters from coming into your RV to make a home.
If you have a bit of wall space then you can buy a magnetic strip to hold your knives, scissors, and other kitchenware. Just remember to take them down on travel days.
Command hooks of all sizes come in handy when looking for travel trailer storage ideas. Think about using small command hooks inside a cupboard door to hold your reading glasses or keys.