With 130 real parts like switches, buttons, diodes, capacitors, transistors and regulators and bread board, the Discover Electronics Kit by Sparkle Labs is a great gift for tweens, teens, even adults. Comes with a step-by-step illustrated manual easily guides you through challenging projects with ease. After mastering the basics of real-world circuits with our sample projects, you can rearrange the parts to create your own gadgets again and again. $49.99 from Sparkle Labs.