I had 3 lightweight wood shipping crates, 1/8" veneer plywood with 1x2 edges, certified pest-free with lids, size 40"x40"x44". These were big to pick up so you needed a van or open truck, but most folks wanted them flat to use the wood. Here you are, I flattened them so you can use the wood.
Pick up by appointment at The Horn Guys in Pasadena most Mondays or Thursdays 11a-4p.