I don't know if you can get them everywhere, but today I picked up 6 free wooden boxes, approx 2.5-3 ft long, 1 foot deep and wide. I think they probably held produce or something. Anyway, they will make great mini beds for my new plants this year. You might want to check yours. They were sturdy enough to work for a year or two easily, and they were clean and free.
free wooden boxes at costco
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