Listing items on eBay is simple enough. If you don't like packing stuff, the UPS Stores do a good if not cheap job of packing. And they can ship it for you at the same time.
It's not cheap - I paid $20+ to have my alloy fuel tank packed up for my flight home (I bought it while out of town). But, if you don't have boxes or packing material, it's sometimes the only way to go.
Start saving your newspapers and packing materials you receive in the mail.
If you get desperate, some large bricks-and-mortar stores also have websites for ordering, and cheap/free shipping. Buy some stuff online, unpack it, return the items at the local store and you have cheap/free boxes.
Also keep your eyes on Craigslist in your local area for people getting rid of moving boxes.