I invested way more time in designing this then I should have, but the original was brittle and breaking and I didn't want this slice of early Internet to disappear into a landfill.
I'll post it to Printables.com soon. I'm not sure how common the brittle plastic issue was but, yeah, there seem to be a lot of variations using this exact same case design.
I haven't seen the LEDs yet since I've lost the power supply, but I've used the same PETG pipe technique a couple of times before and it works great.