This is a FREE work-in-progress for fans that wish to use 5mm round magnets to glue onto the bottom of their existing designs for that "snap" in sound. Drop the magnets in the holes but make sure not to glue them. Glue the rest of the base. The magnets need to spin in place. Also, feel free to use a lot less magnets, the design is overkill.
Now added optional 1mm square 130mm flat base to secure to and then glue onto bottom of design.