NexPCB have shared a 3d printed case design for MCU-Link that is free after you register at their website for information about their services: https://www.nexpcb.com/nxp-mcu-link-3d-printed-case
Erich Styger, of https://www.mcuoneclipse.com fame, also generously donated his design to Thingiverse: https://www.thingiverse.com/thing:4683175
The NexPCB design is a more traditional, enclosed style, while Erich's has a hinged lid and neat way to store probe cables inside.