Mojo^
Well-known member
Northern Tool has 12"x18"x12" solid blocks of Styrofoam free for the asking. They are used in packing the trailers and equipment for shipment. The Northern Tool I visited today had approx. 40-50 blocks of the stuff inside the fence near the receiving dock. Just drive around back and if you see some, ask the manager and they'll let you have all you want. They are happy to get rid of it. I imagine that Tractor Supply, Harbor Freight and other stores may use similar material. These blocks are the perfect size to fit under a seat, bow or in flotation cells and you can't beat the price.