Neutrals and light hues will keep a small space/room looking larger. Using shades of the same colour will keep continuity in the space and add some interest.
Small Spaces
In the Garage
Keep like with like in the garage too, it will make things easy to retrieve for each job and will help to keep it tidy all year long.
Closet Organizing
Group clothing by type; hang all pants together, dresses together and shirts together for easy access. Then organize by colour in each category, keeping season clothes separate. If space is limited, store seasonal clothing elsewhere.