I came across the Ellis stompbox while surfing on the Palm Guitars website, a rare instrument shop in Amsterdam. The Ellis stompbox is made of wood in Australia, has a pickup inside and has an output jack to be plugged either into a PA or a Bass amp. The idea is that when you tap on it, the sound gets amplified which turns your tapping foot into a booming percussion instrument.
courtesy of www.ellisguitars.com.au
It is used by a lot of acoustic guitarists, but not only, here is a video of pianist Jamie Cullum using it:
Check it out on the Ellis guitars website (lots of demos and online shop included). There are different woods to choose from and they are all gorgeous!
English 
French