Arranging items in a storage unit efficiently involves planning and organization to maximize space and keep your belongings accessible. Start by placing heavier, larger items at the back of the unit and on the bottom to serve as a stable base for stacking. Utilize shelving units for smaller items to keep them organized and off the floor. Label all boxes clearly on multiple sides for easy identification. Leave a walkway from the front to the back of the unit to ensure all items are easily reachable. Finally, store items you’ll need to access more frequently at the front of the unit or on top of stacks to minimize the need for rearranging later.