Silvan Audio Workshop is a father-son shop of “wood-savvy audio nuts” who customize high-end Rega RP1 turntables by mounting them in a plinth fashioned from a full slice of tree trunk. You can score a full outfit or send them your own Rega for customization via their Kickstarter: Silvan Audio Workshop
UPDATE: For a variety of strikingly similar modified turntables like the below that have been in production for a number of years, check out Audiowood!