You can see a lever switch attached to the nose of the arm. That's so the robot can detect that it has picked up an object
In the snare test video above, you can see the piano wire snare extend, the arm drop, the snare retract, and the arm raise with the toy jack.
Look for one or more arm kits (I'm working on a second design), a radio, and smart beacon kit early next year.
May all your holidays be robotic.