This is a very simple case for the wren keyboard. Basically it is a box with cut-outs for the connectors.

It improves the sound though an gives some protection.

To assemble I removed the bottom plate from the keyboard and screwed it to the case with the M2 / 8 screws that are use for building the keyboard.

Printed in rPLA by Recycling Fabrik Supports for the cutouts (might not be necessary) 0,2 layer height

You can find the keyboard here: https://github.com/oliviahanley/wren-keyboard. I only designed the case.