WiFi equipment are usually not that pretty. This solution hides it quite well inside a lampshade. Lamp has a dim LED bulb and is used rarely. So in my case WiFi router getting too hot is not an issue.
PLA will not work as WiFi router gets quite hot even when lamp is not used. PLA will eventually deform. PETG is fine.
Parametric FreeCAD project file is attached.
The author hasn't provided the model origin yet.