use sink caddies on the sides of the pantry or closet wall. Smart way to keep track of all of those small packages of pantry items. they are just little sink caddies, held on to the wall by self-adhesive velcro dots!
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.