I'm not sure it's a bright thing to encourage people to comb the beach looking for car keys and loose change at an early age.
I'm positive it's a bad idea to combine that behaviour with a proud love of Star Trek. (It would probably be even worse if you combined it with yesterday's fine toy)
The Star Trek Metal Detector is actually, a rare toy in the collectors market. I personally would like to see the toy concepts Roddenberry rejected.