Do you have too much stuff in your home? Need extra storage space? Many people are in the same situation, and a rented storage unit can be a great way to house everything modern life requires while still allowing you to thrive in your home. But how can you decide what to put into your off-site storage space? Here are 5 strategies you might try. 1. Store the Largest Items. When deciding between various possible items to store, choosing the largest or most bulky items gives you the biggest return on your investment.