Rent the smallest amount of space you will need, and pack the unit full.
Start by gathering as many boxes as you think you will need as well as tape, markers, and packing material (e.g., foam shipping noodles, bubble wrap, packing paper or towels).
If possible, try to use uniformly sized boxes for easy stacking.
Keep Items Covered
Cover your items in your unit to keep them free from dust.
Prepare your space by placing a protective cover on the floor under your goods.
Place your storage items on 2x4 boards or on pallets to guard against dampness. Any concrete floor may become cold and damp.
Plan your storage space. Place items that you may need to access often in the front of the unit.
Do not store anything COMBUSTIBLE (e.g., paint thinner, gasoline, solvents, or paint).
Try to leave an aisle down the center of the storage unit for easier access. Leave a small space between the walls and boxes to allow for air circulation.
Stack heavier boxes on the bottom and lighter boxes on top.