Big toys like 'The Rock' can be exciting, but not everyone wants to haul a 75-pound chunk of concrete around their classrooms, and it's tricky to make one. For a rocking controller that easier to move and build yourself, try the '♥ Rocks' board!
3-D print a pair of rocking bases at your local makerspace, fill with concrete, and screw them into a sheet of plywood when they're dry. Then fix it with a Micro:Bit and get rocking!
Build instructions available here.
Shoutout to Learn-2-Teach, Teach-2-Learn youth for the slick paint job!