This Rube Goldberg machine is so impressive, but, it is enhanced by the fact that many of us taught Stewart & Oliver. These experts are right in our own backyard and probably available for consultation and inspiration.
A cross between Learning Catalytics and the traditional eclickers. Free to use and sign up. Try it out! If you want help with this, let me know. Link to the actual sign up page: https://getkahoot.com/