Otona no Kagaku (science for adults) magazine vol.17
with miniature Theremin vox

get your own world's very first electric instrument invented by Lev Sergeyevich Termen.
putting it together is easy,
all you need is single screwdriver.
and also you can customize it to plug to your amplifier too!

and check out how they play with it...

Otona no Kagaku official website: http://otonanokagaku.net/