Capacitors are almost in all electronics. Im going to show you how to get them. Touch the wires on the capacitor with a screw driver before touching it. That will discharge it, and there will be a huge spark if the capacitor is fully charged.
Step 1: Tools
All you need is a soldering iron.
Step 2: From Old Motherboards.
find the one that you want. Then flip the motherboard over and desolder the wires.
Step 3: Inside Remote Controlled Cars.
do the same as last step. I already desolderd the capacitors on the remote control car.