Fortunately, you don't necessarily need to rent a storage locker or add a new room to your home to fit everything. There are many innovative ways to increase the capacity of the storage space you're already using.
For example, there are storage bins you can buy that are designed to fit neatly under a bed. Some have wheels, making the bins easy to pull out and access.
You've probably seen closet organizers at your local home improvement centre. These can easily double the storage capacity of a closet, while making the space look neater and more organized.
Finally, there are storage units available that are camouflaged as something else, such as an ottoman.
Visit your local home improvement centre. There are many more innovative storage solutions available for your home.