It's no accident that BoxCycle, a site for buying and selling used cardboard boxes started in San Francisco, a city embedded with tech-savvy citizens renowned for their commitment to simply living a better quality of life.
Let's face it, when you need to move the temptation to hit up Staples for a stack of new boxes is often a time saving decision, in an ideal world of course you'd walk the streets and scavenge grocery stores to collect enough boxes for the move. BoxCycle gives you the best of both worlds, the convenience of online shopping with PayPal and the ability to re-use boxes.
You could probably even sell your boxes again when you're done, it's like craiglslist except someone else handles all the communication and matchmaking work. Prices range from 75 cents for an extra small box to a $1.25 for an extra large box.