The 'orb' shape should be nice acoustically, no standing waves. If the interior cu. in. can be matched up to the drivers, there's possibilities there. I'm surprised they're not ported, which would make sense for such a small object. Most small bookshelf units are...
I'm trying to be Positive, y'all. After all the jokes about 'monkey coffins', and the strange variations that some of the speakers we know and love/lust over, a new variant can at least elicit a *S* And it's not aimed at 'us' (*ahem*)...it's already Bluetoothed (or will be) so there's the market.
Besides...bamboo is pretty impressive. When laminated, it acts like a hardwood closer to maple. I have some thick samples in my shop that if you don't pre-drill a hole into it, it snaps screws like twigs. Bamboo arches, pound for pound, approach steel in it's exhibited qualities.
You want a dense cabinet? Try a bamboo laminate. And obviously you can shape it into something other than a ball...