Closet/shelf suggestions

I went to Lowes and in their closet organizing section found some drawer baskets type units that had the right depth and width. Bought the corresponding snap in sliding brackets and just attached them to the existing RV shelves. Because these units are modular, you pick the size and brackets to meet your need. You can get full extension brackets or shorter half slides. They even had drop down brackets that let you slide a basket/drawer on the top so it extends and drops down to a lower level to access whats inside. Baskets or draws came in wood, plastic, laminate metal, etc., in all sorts of sizes.