Here is a project that I made several years ago for my storage shed. I took an old pallet and created a storage shelf that I hung on the inside of my shed. The storage shelf has shelves to store pots and chemicals, hooks to hang tools and hats on and a small storage drawer for smaller items.
The nice thing about this project was that I didn't need to do much construction to build it. I removed several boards from one side of the pallet and those pieces were recycled into shelves and drawers.
Easy to make and great storage!