To snag the world's attention, Texas Instruments needed a marketing gimmick ... a calculator small enough to be held in your hand. Just over six inches tall, this portable calculator certainly ...

Now in his 70s, he’s spent the past 20 years building instruments himself entirely by hand. “Made my first violin without any help from anybody, and it ended up in the fireplace,” Chandler said.

The whistles and clarinets work by having additional keys which replicate what a second hand would do. “Having a lesser instrument is not an option” Peter says that sometimes it's possible to ...