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Two pieces 3.5 x 18-inch foam board · Two pieces 3 x 3-inch foam board Assemble this eye-spy device with your kids, and in a short time, your little ones will be peeking over your neighbors ...

Starting with a small RC proof of concept, [James] tested out some of his favorite construction materials: foam board, trash bags, duct tape, and our personal favorite: hot glue! After a ...