This sounds vague, because it can have many, many possible answers (I hope), but I will accept any of them.
Basically, I want to demo a product, which has an eInk display (plus WiFi and BlueTooth), to a company in Singapore:
To give them an idea of how it can be used to display their data, I would like to display some Singaporean data, maybe population, or similar.
The catch is that I want it to updated every second or so, displaying the temperature wouldn't be much good as it rarely varies.
I don't care what the data is, so is it on topic to ask for some Singaporean data which changes every second or so and has a gratis HTTP(S) API? I would like something to grab their attention and get them wondering how we can use this (cheap) device.