The hyoutan is technically a type of cucumber that can be eaten and also used as a sponge, gourd, birdhouse or instrument housing. Bird Electronic in Japan decided that it would also make a pretty good speaker that would produce a “soft and natural” sound. The Hyoukan Speaker Double cone has a mini-adapter to connect to your iPod or other audio player. They can be hung or placed on a shelf and come with a MSRP of ¥ 18,500 ($185.00.)