https://dichstudios.com/products/po-case-diy-kit

All Cases are now Clear Acrylic,
Updates Includes:
Thinner housing
Revised PO board support, even easier to assemble!
Taller Buttons for improved feel and play-ability
Better access to knobs
Removed case flexing
New DIY Kit option! Extra Buttons included to practice assembling/gluing button halves together.
Non Destructive design, You can keep the hang tag attached! + No Glue comes in contact with the Pocket Operator!
Instructions included with all kits
Features:

Durable acrylic case for the Teenage Engineering Pocket Operators
Diffused clear button layer improves LED visibility
Clear top layer to protect LCD screen
Open access to batteries
Easy to assemble