There was a time when building your own electronic gadgets from scratch was a common past-time for those light on social skills and heavy on brain power and curiosity. With the predominance of smart phones with unlimited functionality, DIY projects at home involving tiny components, circuit boards, and wires are less common. Yet they can make a great science project or constructive way to pass a lazy afternoon.
Of course, the basis of any project which requires connecting metal parts is a trusty soldering iron. For those starting out, there is no need to invest a lot of money in a fully featured, professional device. This pencil type soldering iron from Sodial is all you need for the job. It requires just a standard AC outlet, and is great for electronics, computer equipment, and even watch repair. Note that soldering tin is sold separately.