3 sheets of metal

Also known as the Stealth Bomber, is an American heavy penetration strategic bomber, featuring low observable stealth technology designed for penetrating dense anti-aircraft.
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 Often known simply as the Fokker Triplane, was a World War I fighter aircraft built by Fokker-Flugzeugwerke. The Dr.I saw widespread service in the spring of 1918. It became famous as the aircraft in which Manfred von Richthofen gained his last 19 victories, and in which he was killed on 21 April 1918.
2 sheets of metal

Bass Fiddle- Is a stringed musical instrument that usually consists of 4 strings and rests vertically on the floor when played. It is the largest instrument of the violin family with the lowest pitch sounding an octave lower than the cello. It can be played either with a bow or by plucking the strings.
These amazingly detailed DIY models start as 4” square steel 3D models. Simply snip out the pieces and bend the tabs through corresponding connection points. Easy to follow instruction included. Tweezers or small needle nose pliers are suggested to facilitate assembly.
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The hop-on, hop-off New York City tour bus has become an iconic image around the city. Similar tour buses have become popular in many large cities as a fun and efficient way to see the sites.