Once you have the basic skills and knowledge either from a School Design and Technology course, or tackling Short Circuits Vol 1, you can now have some real fun! With this book (and associated project packs available separately - see following pages) you can make such things as; a mini strobe light, police siren, mini organ, a couple of powerful radio transmitters, an FM radio - even a Knight Rider scanner! All components are fully described and explained, along with tutorials on soldering iron and multimeter use. All projects are safe and battery powered.
https://www.jaycar.com.au/short-circuits
For More info on Kits for Kids.