Star Trek Props
Playmates Tricorder Upgrade - Before
One of my first electronic props was this tricorder. With a set of circuit boards from GMProps, I was able to take a Playmates tricorder (as seen below) and was able to add some lights and sounds to it, making it more functional.
Playmates Tricorder Upgrade - After
Even with great instructions from GMProps, this was still an involved undertaking.
But, in the end, it was a great learning experience.