Boxbee bills itself as an "urban storage valet."
Have some extra stuff you just can’t throw away? In San Francisco and New York, there's a new storage option that lets you pay for only the space you need. Boxbee lets you order one or more standard-size boxes, which then get delivered to your home for free. Once you get started on packing away those off-season clothes or old books, add the items to Boxbee’s online inventory system. That way, you’ll know exactly which box to retrieve later. You can even designate boxes to be shared with friends or colleagues.
Storage for one Boxbee box: $6/mo. in San Francisco, $7.50/mo. in New York City. Pickups are always free. Each retrieval delivery costs $15 plus $2 per box.
This video explains the process in more detail.