Pitsco has a
guide on their website for building a spinning Christmas tree out of their Tetrix Prime Robotics Set. Their design uses elements from both the starter set (beams) and the expansion set (linkages). They even include a file for 3D printing 2 specialized parts for constructing the center support. But don't worry if you don't own a 3D printer or have time to run down to the local STEM center. There is also an option to build the center support out of wheels and axles (shown here). By adding a battery-operated set of LED lights, I've got a very festive (if somewhat nerdy) centerpiece for our Christmas table.
