I'm not kidding. 
The maker sent me a link and mentioned that he thought the absurdity of it was fun and the tone was not bad for cardboard. He mentions that these are NOT intended to replace a real wooden instrument, but that they are kind of fun and might be useful in some situations. The maker was very polite and did not wish to be seen as spamming the forum, so decided to post the link here because I thought some folks might find in interesting. If well known bassmakers all over the world start to go out of business because of my decision, I'll assume full responsibility.
The maker sent me a link and mentioned that he thought the absurdity of it was fun and the tone was not bad for cardboard. He mentions that these are NOT intended to replace a real wooden instrument, but that they are kind of fun and might be useful in some situations. The maker was very polite and did not wish to be seen as spamming the forum, so decided to post the link here because I thought some folks might find in interesting. If well known bassmakers all over the world start to go out of business because of my decision, I'll assume full responsibility.
. oh how we'll laugh! [takes pills, goes for a lie down] Erm, yeah.