Enttec USB DMX Interface Enclosure
This is a small enclosure for the Enttec USB to DMX widget (https://www.amazon.co.uk/gp/product/B00ZL8FQAU/ref=as_li_ss_tl?ie=UTF8&psc=1&linkCode=sl1&tag=arthurguy-yt-21&linkId=e398c320fedc1e5d73ff4117fdf90bb3), these adapters can be bought quite cheaply without a case, this 2 part 3D model solves that.
The DMX module fits snugly inside and the top pushes into place holding everything firm.
The tolerances on my printer aren't great which means this might not be as snug fitting if printed on a good printer.