Sound-effects generating device with bipolar magnetic switching for activity devices

A combinable special effects unit comprising:

• a housing;
• at least one magnet assembly comprising a polarized magnetic force field proximally combined with said housing;
• an actuator/sensor assembly within said housing comprising a bipolar magnet, a pair of conductive elements sandwiching the bipolar magnet, and an electrically conductive member attracted by way of the polarized magnetic force field to adhere to one of the conductive elements with dependence upon the polarized magnetic force field of the magnet assembly;
• a stimulus producing transducer for producing at least one predetermined audible or visual stimulus;
• and
• a circuit for interconnecting the actuator/sensor assembly and the stimulus producing transducer such that the polarized magnetic force field of the magnet assembly proximally combined with said housing relative to the actuator/sensor assembly will activate the stimulus producing transducer, wherein the stimulus emanates from at least one of an audible unit or a visual unit coupled with said housing.