Use Ikea Knuff magazine files as under sink storage holders. Screw a magazine file holder to the inside of kitchen cupboards. Add space to store more bulky items like chopping boards, cleaning products etc.
Materials: KNUFF Magazine file set I have found this idea on one czech website, Napadyproanicku. You need three pieces of Knuff magazine files, wooden blocks, hot glue gun. Magazine files and block (Diy Garden Furniture)