Simple planter box made from recycled tongue and groove cedar fencing. All joints are rabbeted. The dang thing was almost sturdy enough to leave without any fasteners between the rabbets and t&g lumber. The rabbets are at the ends to prevent the long-ways sides from busting out. And for good measure I added some pressure treated legs which came from cutoffs of my recent pergola build (didn’t have enough cedar). Should last years, I hope. I have all the pieces cut for a second one. It should go together in about half an hour or less.