Does anyone have any idea what this is used for? Seems like a waste

Since the one pictured is located next to a dishwasher, here are some ideas:

Slim Tray or Cutting Board Storage
Perfect for vertically storing cutting boards, baking sheets, and serving trays right where you need them.

Dishwasher Detergent & Rinse Aid Storage
Keep dishwasher pods, rinse aid, and other cleaning supplies neatly organized and within arm’s reach.

Towel or Rag Storage (Rolled or Hanging)
Store extra dish towels, rags, or microfiber cloths for quick access during cleanup.

Spice Rack (Especially for Everyday Cooking)
Store your most-used spices here if it’s close to the cooking area as well — easy to grab while you prep or clean.

Utensil Caddy or Slim Tool Organizer
Use dividers to organize long utensils like tongs, spatulas, and ladles that may not fit in a standard drawer.

Reusable Water Bottle or Travel Mug Storage
Store upright bottles or mugs so you can easily fill and rinse them at the sink or dishwasher.

Plastic Wrap, Foil, & Parchment Paper
Slide in a few upright containers to hold these kitchen essentials—super handy for packing leftovers post-wash.

Cleaning Tools (Brushes, Sponges, Scrubbers)
Stash dish brushes, extra sponges, and specialty scrubbers in a pull-out container or hanging system.

Pet Bowl Cleaning Station
Keep pet feeding mats or bowls here, so they can go straight into the dishwasher when needed.

Mini Recycling or Trash Bin
Store a slim bin for small recyclables like bottle caps or food wrappers as you clean up.