User loneacoustic on Reddit has been providing blueprints for PS TV cases that you can print yourself (if you’re the lucky owner of a 3D printer) or get printed in one of the many places that will do it for you nowadays.
Of course these are “basic” 3D printed designs so are just for show. Do not expect them to have actually working buttons, etc! Still, looks pretty cool if for some reason you want your PSTV to disguise itself as the next cool “mini console” out there. In particular if you use it a lot for your emulation needs 🙂