This is actually related to my earlier post

It would be nice to find a source of free cardboard boxes that are (i) free, (ii) sturdy enough for shipping ewaste and (iii) are all more of less of the same size to minimize shipping cost, something like 20X20X20 or 24X24X24.

Sure, there are a lot of places that throw away boxes but they are often either too big or too small or too thin etc. You can also buy boxes but I am trying to stay green (that is, both save money and help the environment a bit).



Have you come across good sources of such boxes?