I live in a small apartment with a small storage unit in the basement. I had 60x60 cm floor space left after putting up some shelves.
Since i was tied of moving cardboard boxes around, I decided to make a tool tower on wheels so that i could easily move in and out of the unit to get to the other stuff in there.
The tower itself is 55x55cm and 198cm tall so it can go under the 2m door opening. On the sides perforated metal sheets allow me to hang bigger tools, cords, and other stuff on hooks.
The project changed a lot during building as a had new ideas. Both the metal sides and drawers are an addition to the original design, which was only intended to have shelves.