I made a 3D printed case using the Bambu Lab A1 printer along with Tinkercad for design. Remixing Mike Matrix’s Project Box, I designed a simple, sturdy, and stackable case to use with the MIDI thru kit that Meeblip sells. Check them out at:
https://makerworld.com/en/models/1726545-meeblip-thru5-case
https://www.tinkercad.com/things/6j2WxXrUfTZ-meeblip-thru5-case