Bring a kid that can't have a job or just not having a lot of money is hard so I am always looking to save money. I like going to the arc or goodwill to save money.

Step 1: Shopping

Whenever I go to a second hand store I always look for things like 99 cent cassette player or the cheap VCR rewinders or even for a little more money dvd or cd players.

Step 2: Tearing It Apart

There are many useful things in all the items listed previously. The things I have found are: motors, gears, wires, circuit boards, LCDs, LEDs, and switches.

Step 3: Shopping Again

You can also find many rc cars although a lot of times they do not have their remotes. But they can still be very useful.

Step 4: Tearing It Apart Again

When you get into the car their are usually many useful things. Although on occasion somebody has already taken parts from it. The things I have found are: gearboxes, wheels, motors, circuit boards, wires, and gears.

Step 5: Be Creative

There are many other things you could salvage parts from. I've gotten fans, a walking toy dinosaur, and a walking dog.
How do you determine the operating voltage of motors you find?
First, look at the devices battery compartment. <br>multiply the number of batteries by 1.5 volt, and that is your starting point for testing. <br> <br>If that doesn't work, first try reversing polarity on the wires. <br>then proceed to the next voltage. <br> <br>If the device is designed to run on batteries, the voltages to try will be 1.5, 3, 6, 9(if there is a nine volt connector, like in alarm clocks) and 12. Unless it is a much larger motor, taken from a power hungry device(like a weed wacker) then the only motors above 12 volt will be AC powered. and they should have a nice clear label on them telling you voltage AND amperage, and even polarity. <br> <br>If the device is AC only(like a VCR, etc) first check for labels right on the motor. If you can't find one, look inside the device for a stepdown transformer directly connected to the power cord. The transformer should be labeled for output voltage. <br> <br>If all else fails, apply 1500V AC, and watch the sparks fly! <br>it may not be as useful, but it sure is fun :-) <br>No, really kids, do NOT apply mythbuster style voltages to salvaged items in your home. Even as trained professionals, Mythbusters have managed to shoot a cannonball through peoples homes. <br>Let someone with catastrophic liability insurance do the high voltage destruction for you, and watch it in the safety of your livingroom.
Thank you.

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