Silicone nightlamp with weather indication

I'm busy working on an idea for a nightlight for my kids' room. In addition to some basic dimming and colour functions, I'm considering a simple weather indication, so that they can push a button to get an idea of what to pick out to wear for the day. I'm happy designing and building the electronics part (I'm using NeoPixels and ESP8266 at the moment), but I don't know how to make the physical lamp from silicone, and need someone's help with that.