Getting your kids started in electronics and coding is much easier these days. There are plenty of cool educational kits available on the market. The littleBits Gizmos & Gadgets Kit is particularly fun as it comes with all the parts your child needs to start building things. It comes with a fan, light sensor, servo, buzzer, wireless transmitter, wireless receiver, and other parts. You also get step-by-step instructions for 12 inventions.
The kit comes with 15 blocks and various accessories, so you can try interesting projects and learn a thing or two in the process. The above video provides more information on this kit.