Right yo your front door!
Places like USPS, offer customers FREE boxes, of various sizes and styles. All you have to do is go up to your local post office or visit them online to get your free supplies. Visit now, Click Here, this link will take you directly to the supplies.
Another great way to get free supplies is to check on Craigslist, where you can find almost everything you need to ship for basically FREE or super discounted. You can also utilize your favorite shopping stores such as, Dollar General and Family Dollar. Dollar General usually has tons of boxes that they are going to throw away, that they are often happy to give away, all you have to do is find the manager and ASK. (Check on a Sunday night or Monday morning)
Repurpose your old boxes at home, like the 3 year old DVD player box, its not like you are going to take the DVD player back anytime soon. IF you decide to move, pack it nice and neat in a box with all the other electronics.
Finding free shipping supplies is easier than going to the store and spending money on something that is going to the trash anyway. Stop wasting money buying boxes and save by repurposing boxes.