…I have built a case for my Etherwave-Pro Theremin, and I plan to do so for the Octopus also…
…for the EW-Pro-case I have used a ‘custom-kit’ from http://www.flightcase-onderdelen.nl/ …
…while these ‘kits’ (you tell them exactely what size you want – and they cut it, put in all required parts and you just put it all together) are not perfect – and I had to build mine without the promised instuctions-manual (it was just not included with my shipment) – you get a robust case in the end, which is trustworthy for your precious equipment…