One way to reduce the environmental impacts of moving is to buy used boxes.  I'm talking about the standard sized moving boxes (book, wardrobe, etc.) that promote efficient use of space in the truck.  Most towns of any size will have some who sells used moving boxes in good condition at half (or less) the cost of new boxes.  Often the rental truck outfits sell used boxes, but you may have to ask.

Then, when you are done with the move, sell the boxes back to the same type of outfit in your new town.  You'll save money on one end and make money on the other end.

After years spent operating recycling centers, I still cringe when I see someone drive in to recycle perfectly good boxes that have a resale value of hundreds of dollars.  Yes, recycling is good--but REUSE is better.

Note: While re-using liquor boxes is a fine idea, the U.S. Postal Service won't take them, so if you're packing anything that might not fit on the truck and need to be mailed ... use other boxes.

I've never had a problem going to a big department store or grocery store and asking for boxes. They always load me right up with sturdy stuff for free.