If you can't find any here, I would ask at the bakery in the Porter Square Shaw's. They usually have several grocery carts worth of good boxes by the end of the night.
I don't, but two places you can generally get good boxes are liquor stores and major bookstores like b&n or borders. The bookstores will often give you their normal sized boxes for books for free and they really are the perfect size for moving.
You've got some good suggestions here already, but you may also want to click on the 'moving' tag and look at old posts, as this subject has come up several times in the past.
(Maybe some of the people who were offering them last year still have some left over for you?)
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Date: 2010-05-12 09:41 pm (UTC)no subject
Date: 2010-05-12 09:43 pm (UTC)no subject
Date: 2010-05-13 12:11 am (UTC)no subject
Date: 2010-05-13 12:32 am (UTC)no subject
Date: 2010-05-13 03:11 am (UTC)(Maybe some of the people who were offering them last year still have some left over for you?)