Would you like to have giant robot arms with which to crush your enemies? Okay, that's a dumb question. Of course you would! Etsy seller giantcardboardrobots makes them:

Each arm is approximately 5' 6" in length (about 3 feet longer from where your hands will grab), 9" x 9" in width. The arms allow for both 90° bending motion in the elbows as well as 360° rotation of the wrist. The arms break down into easily assembled component parts. Disassembled, both arms fit into a 30" x 18" x 6" box.

Link via Gizmodo | Photo: giantcardboardrobots